KVM-A8

PiKVM PCIe, PiKVM-A8

PiKVM-A8 Parts

PiKVM-A8 connection digram

X630-A8

X630-A8 Dimension

PiKVM-A8

Difference between X680-A8 cable & X630-A5 cable

Update History

X630-A8 (The core expansion shield of this kit) was upated from V1.7 to V1.8 in October 2023.

1. Support WatchDog
2. RTC function can be used directly, no need to configure.

Overview

PiKVM-A8 is a member of the PiKVM family. It only supports Raspberry Pi 4 Model B. It is directly inserted into the computer case as a PCI card. That is, you can put a computer into your computer. It does not require additional cables and is more convenient to use.

The PiKVM-A8 is composed of X630-A8 and X630:

• X630 HDMI to CSI-2 Board (for video capture)
• X630-A8 HAT Board (for POE, RTC, ATX Control power in etc)

Note: There is no I2S Audio In connector on the X630-A8 for the first production batch, the I2S Audio In connector was added since March 2023!!!

---

Geekworm KVM family products:

Model	Compatible With	Form Factor	Max Input Resolution	ATX Control	RTC Chipset	OLED display	PoE	RS232 Console	Ethernet	M.2 NVMe Socket	Control of PCs	USB HUB	I2S audio
KVM-A3 V1.6	Raspberry Pi 4	HAT	1920x1080 @50Hz	Yes	DS1307	0.96"	No	No	1GbE	No	1	No	Yes In-phase I2S wire
KVM-A8 V1.8	Raspberry Pi 4	PCI	1920x1080 @50Hz	Yes	PCF8563	0.96" (Equipped with a 2P wire to connect the OLED)	802.3af	No	1GbE	No	1	No	Yes Inverted-phase I2S wire
KVM-A4 V2.0	Raspberry Pi 2W	HAT	1920x1080 @50Hz	Yes	DS1307	0.96"	No	No	No	No	1	No	No
X680 V1.5	Raspberry Pi CM4	Box	1920x1080 @60Hz	Yes	PCF8563	0.96"	No	No	1GbE	2280	4	Yes	No
X680 V1.3 Updated to V1.5 now	Raspberry Pi CM4	Box	1920x1080 @50Hz	Yes	DS1307	0.96"	No	No	1GbE	2280	4	Yes	No
X650 V1.5	Raspberry Pi CM4	PCI	1920x1080 @60Hz	Yes	DS1307	No	No	No	1GbE	No	1	No	No
X650 V1.3	Raspberry Pi CM4	PCI	1920x1080 @50Hz	Yes	DS1307	No	No	No	1GbE	No	1	No	No
X652 V1.0	Raspberry Pi CM4	PCI	1920x1080 @60Hz	Yes	DS1307	No	802.3af (POE injector is required due to compatibility issues)	No	1GbE	2280	1	No	No

How to Power

• POE power (Recommend, but it's expensive because you need a poe switch, the poe switch must support 802.3af.)
• Power Input: 5.1Vdc +/-5% , ≥3A (Power Via USB Type-C port of X630-A8)

How to Cool

X630-A8 (PiKVM-A8 PCIe version) equipped with a active cooling fan(3007 5V PH2.0) that cool your raspberry pi;

Packing List

• 1 x X630 HDMI to CSI-2 Module
• 1 x FPC cable (Length: 5cm)
• 4 x M2.5x6mm Screws
• 1 x X630-A8 V1.7 Expansion Board
• 1 x FPC cable (Length: 5cm)
• 1 x ATX Control Cable (Length: 52cm)
• 1 x Motherboard Internal USB 2.0 9-pin Female Header to TYPE-C USB OTG Cable (Length: 50cm)
• 1 x USB3.0 IDC to TYPE-C (Length: 45cm)
• 1 x Standard height PCIe Add-in Card I/O Bracket
• 4 x M2.5x12mm F/F Spacers
• 8 x M2.5x6mm Screws
• 1x X630-A8-CAB V1.1 Camera Adapter board
• 2 x PM3x6mm Screws
• 1 X HDMI cable (60cm length)

Hardware Parameters

Installation Video

PiKVM-A8 Installation Video: https://youtu.be/BV8UkSgqWLo

Connection Diagram

Overall connection diagram：

Wiring of computer front panel IO socket

(Use ASUS motherboard for example, different computers maybe different)

How to connect OLED

User Manual

First you need to make sure your hardware connections are correct, please refer to the above video and diagram below.

Important Note: If you receive and are using the black 10pin I2S audio cable, the I2S cable maybe in the wrong wire connection. Refer to below photo. Please do not use the wrong I2S cable for KVM-A8, you need to change the I2S cable to right direction to use or attach order number to contact us via email(support@geekworm.com).

OS Download & Installation

1. Firstly, need prepair a micro sd card, a minimum 16 Gb class 10 memory card is recommended.

2. Download an appropriate OS image for the PiKVM, the url link is: https://pikvm.org/download/

We recommend that you use the 'V3 Pre-Assembled' version, and this image includes OLED display configuration.

For Raspberry Pi 4, please use PiKVM V3 platform. Only compatible with PiKVM V3 OS, NOT support V4

3. Flash it to a microSD memory card by following the simple instructions or Official installation tutorial

4. Power the device, then open explore to login the pikvm web ui.

Enable RTC

Only need to configure the RTC function for the X630-A8 V1.7 version, X630-A8 V1.8 don't need.

Due to different RTC chips with official PiKVM hardware, you still need to configure RTC to make RTC work normally.

Firstly, insert the C1220 button battery. run the following command in web terminal window:

1. switch to 'root' user

su root

then type the password, and the default password is 'root' also.

2. Switch OS to writable mode

rw

3. Edit the /boot/config.txt file, and change line dtoverlay=i2c-rtc,pcf8563 to dtoverlay=i2c-rtc,ds1307 (due to use the different RTC chip).

sudo nano /boot/config.txt

Then save & reboot the device;

4.Test & setting RTC, write&read the time of Raspberry Pi to RTC DS1307

date
sudo hwclock -w
sudo hwclock -r

5. Swith OS to readonly mode

ro

Enable OLED display

Run the following command in web terminal window to enable OLED display:

rw
systemctl enable --now kvmd-oled 
ro

If you are using PiKVM OS V3 Pre-Assembled, the OLED configuration is already pre-installed, you can ignore this step.

Enable hdmi audio

Refer to Enable pikvm hdmi audio

FAQ

PiKVM is first and foremost a trademark, which is controlled by https://pikvm.org, and it does not belong to Geekworm.

PiKVM is Free and Open Source Software released under the GPLv3.

Geekworm's KVM products use the open source pikvm software developed by pikvm.org under the GPLv3 without any modification. Geekworm will regularly donate to pikvm.org

About after-sales service of Geekworm KVM Products:

The after-sales service of all products sold by Geekworm should be the responsibility of our Geekworm team (email: support@geekworm.com), please DO NOT disturb the official PiKVM support team.

• First of all, we recommend you to get more FAQ information on the official website: official FAQ, or check the following FAQ;

• You can post a issue ticket at Geekworm forum or email to us (support@geekworm.com) and attached your installation pictures or videos to get some help.

• Blog sharing for reference: https://www.andysblog.de/kvm-over-ip-pikvm-als-bausatz

Expand

Q: How to enable oled display on KVM-A4?

A. Refer to https://geekworm.com/community/forum/topic/85024/enable-oled-on-geekworm-pikvm-a4-kit

Expand

Q: Why KVM-A3/KVM-A4/KVM-A8/X680 does not show the video only display No Signals?

A:

• First refer to the Video problems to troubleshoot
• Please check the hardware connection. Double-check that the video capture device is connected correctly and tightly.
• Make sure you use the original HDMI port. If your desktop only has a VGA display port, there may be no video signal when you use VGA to HDMI adapter, and there is no way to solve this; However, you can try to lower the resolution and restart the PC to test, but the probability of success is very low.
• Change the HDMI cable to test.
• Test the X630 separately to check if there is HDMI output.(run the ls /dev/video0 command, if you see anything such as /dev/video0 other than file not found, then it’s available )
• Some laptops do not output any signal until you switch the output (usually via the FN + and an F5 key on the keyboard).
• Your computer maybe enter sleep mode, please exit sleep mode.
• Feedback from users: If you're using something like NGINX Proxy Manager, you must have Websockets Support enabled for it to work correctly – screenshots below:

• Feedback from users: Multiple Network IPs. if you'll have similar thing in the future: janus is using stun servers for determining public ip address, if the network has several public IP addresses and route traffic through multiple of those, janus via stun will detect the change of the network and restart the stream each time

Solution: either lock traffic from pikvm through one gateway (one public IP address) or configure some sort of session persistence (sticky connection)

• Run the command systemctl status kvmd-tc358743 to check whether the video service is working properly.

Expand

Q: Which pins are available on the KVM-A3?

A: You only can use GPIO16, 26, 11, 17, 25, 9, 10 pins on KVM-A3

Expand

Q: I want to control several pc power. Is it possible with one KVM-A3 and several X630-A5?

A. No, one kit can only control one pc, you can refer to X680 to control up to 4 PCs.

Expand

Q: How to do if KVM-A8 hangs up or reboot or has to be started manually?

A. The KVM-A8 hardware itself does not cause the system to reboot, and [[KVM-A8 shield is controled by raspberry pi 4;

Please ensure these keys:

1. The PiKVM OS version is correct;

2. Check & use a high-quality power supply;

3. Whether the raspberry pi 4 temperature is too high;

4. Contact us via email to support@geekworm.com

If you find that the color wiring is wrong, please contact us at support@geekworm.com

Expand

Q. I want to control several pc power. Is it possible with one KVM-A8

A: No, one PiKVM-A8 can only control one pc. Please refer to X680 4-port IP KVM Switch.

Expand

Q. How to login pikvm os?

A: Input the XX.XX.XX.XX ip address on the explorer, then input user: admin, the default password is 'admin' also.

Or refer to GETTING TO KNOW THE INTERFACE

Expand

Q: How to connect to wifi?

A: Refer to | Optional setting up Wi-Fi

If you want to connect KVM to a Wi-Fi network, you need to tell the device ESSID and password before first boot. To do this, mount the first partition of the memory card (FAT32) and edit or make the pikvm.txt file there. Do not remove line FIRSTBOOT=1 or FIRST_BOOT-1 for first time booting, just add your wifi settings like this:

FIRSTBOOT=1
WIFI_ESSID='mynet'
WIFI_PASSWD='your password'

There is a possibility that, in countries that support CH13, the device will not connect. You will need to configure your router to disable channels 12-14 or disable Auto scan mode so it will connect.

Save, unmount and follow the next step.

Expand

Q. How to switch root user?

A:

su root
#default password  is root also

Expand

Q: Will there will be a case for KVM-A4?

A: No, there is no plan to make a case for KVM-A4, the KVM-A4 kit can only use WiFi NOT ethernet, the match metal case will block the WiFi singal.

Expand

Q. Does KVM-A8 support passive heatsink such as (P165-A or P165-B etc) instead of fan?

A: You can use the P165 aluminium heatsink or the H402 pure copper heatsink, but must remove the X630-A8 fan and fan connector.

①If use P165-A(thickness 7mm), you can use M2.5*5mm spacer instead of M2.5*12mm spacer to fix it;

②if use P165-B(thickness 11mm), you can directly use M2.5*6mm screws to fix it;

③if use H402(thickness 4mm), you can use M2.5*8mm spacer instead of M2.5*12mm spacer.

You can also use other suitable spacers + screws to fix the heatsink.

Expand

Q: Why is the X680 not working?

A:

1. Firstly, must make sure the hardware expecially CM4 is connected correctly and securely.

• Check if the X680's onboard SYS-PWR, CM-PWR, CM-ACT LEDs are lit.
• If SYS-PWR LED is not lit, that means no power to X680; If the CM-PWR and CM-ACT LEDs are not lit, that means that the CM4 is not installed properly. Please recheck the CM4 installation, or check if the CM4 / X680 installation slot is damaged.(This is important! Many problems are caused by poor contact of CM4)
• If the X680's SYS-PWR, CM-PWR, CM-ACT LEDs are lit, then check the wiring connection.

Please refer to the following picture for the wiring connection and LED description.

2. Make sure to use the right pikvm OS. Only PiKVM V3 is supported.

V3 Pre-Assembled version already includes OLED display configuration, while V3 HAT Kit version need to configuring OLED yourself.

3. Important: Remove the USB cable after programming is complete.

4. Please email us at support@geekworm.com if you have further questions.

Expand

Q: Why is USB mass driver not recognized on X680?

A: Please refer to the description in the red rectangle in the picture below;

The USB mass is not recognized in PIKVM OS, you can understand USB mass as a local USB HUB in PIKVM OS.

These 3 USB ports are used for local switching between target PC1-PC4, e.g. a USB disk with the OS image can be used to install the os in PC1, if switching to PC2, then the os can be installed in PC2, and so on.

Expand

Q: Does the x680 support audio?

A: Yes. Refer to Enable pikvm hdmi audio

Expand

Q: Does the X680 support PoE power? How to enable PoE Power?

A: The X680 doesn't support POE, but you can use something similar to the PD3005G-3A

Expand

Q: Why can't I switch to another PC on X680?'

A: You need to make sure that your target computer is not in sleep, because when the computer is sleep, the USB port will stop supplying power

Expand

Q: Why NVME SSD cannot be recognized on X680？

A: Login the pikvm web teminal, then type the following command:

lspci

The result of the command should look similar to the following, if you can't find something similar to the following, your NVME SSD is not compatible

Expand

Q: How to boot from NVMe SSD on X680?

A: Refer to the following third-party tutorials:

• https://www.jeffgeerling.com/blog/2021/raspberry-pi-can-boot-nvme-ssds-now
• https://hagensieker.com/2022/04/17/booting- a-raspberry-pi-cm4-from-an-nvme/
• https://dphacks.com/2021/11/21/how-to-boot-a-pi-cm4-from-nvme-ssd/

You can also check out the official guide of the Raspberry Pi Foundation on how to boot CM4 from NVMe devices

• https://github.com/raspberrypi/documentation/blob/develop/documentation/asciidoc/computers/raspberry-pi/boot-nvme.adoc

Expand

Q: Why OLED is not display?

A: Please follow the steps below to check

1. Please confirm that your OS is right:

Due to downloading the wrong firmware, the OLED cannot be displayed. We ALSO made such mistakes during testing

2. Please check if the order of OLED screen pins is correct, please email to support@geekworm.com if it's a wrong pin order;

The run the following command to check the I2C address

sudo i2cdetect -y 1

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --  

3c is a hexadecimal number, it is the I2C address of OLED, if you can’t find this value, please shut down and reconnect shield and OLED, then run this command again, If you still can't find the OLED's I2C address, the OLED screen may be damaged.

PS: Since the i2cdetect tool is not installed by default in pikvm os, you need to install it first. You can install it through the following command

pikvm-update
rw
pacman -S i2c-tools -y

4. Then run the following command to enable OLED display:

rw
systemctl enable --now kvmd-oled 
ro

Expand

Q. How do I emulate various USB devices on the target machine?

More details, pls refer to: https://discord.com/channels/580094191938437144/896216359963332628/1021503994436276245

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Anonymous user #15

22 days ago

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I bought the KVM-A8-PCI two days ago. I tried to install it according to the instructions. Unfortunately, the two-year-old YouTube instructions no longer match the PIKVM website, and after several attempts, I can't get the RPI v4 to load the operating system.

Which version should I actually use?

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Lisa

22 days ago

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Hello，KVM-A8 does not support V4, please download V3 for testing.

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Anonymous user #13

4 months ago

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"Hi，KVM-A8 is built into the Computer Case, there are no reserved pins."

Yes it is built into the computer case I understand. That does not matter to the question so please give the answer: is the A8 board using all the pins or only some.

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Anonymous user #13

4 months ago

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It seems as if the KVM-A8 board covers all the Pi pins. Are all the pins in active use by A8 board, or could some be used?

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Lisa

4 months ago

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Hi，KVM-A8 is built into the Computer Case, there are no reserved pins.

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Anonymous user #12

6 months ago

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Hello, can I powered this using original raspberry PI 4 power supply?

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Lisa

6 months ago

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Hi,yes,you can use it;please refer to KVM-A8#How to Power

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Anonymous user #11

8 months ago

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Is there a good reason that the pi cannot be powered by its OTG port? Because the 9-pin USB 2.0 header on my motherboard is powered by the 3A 5Vsb rail on my power supply, and since that's what I would plug the OTG port into anyway it seems like a better solution than powering it externally.

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Harry

8 months ago

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Sorry, Don't understand your meaning

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Anonymous user #14

one month ago

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That port is to be used for input devices. Keyboard and mouse. Otherwise... How do you control the system using the KVM? ;)

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Anonymous user #10

10 months ago

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Are there any heatsinks that will work in place of the fan with enough clearance for passive cooling?

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Lisa

10 months ago

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Hi,You can use the P165 aluminium heatsink or the H402 pure copper heatsink, but must remove the X630-A8 fan and fan connector.please refer to PiKVM-A8#FAQ-Q6

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Anonymous user #8

14 months ago

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Hello together is the fan directly connected to 5V or is there a way to enable or disable the fan. The original fan started making noises, since it is only needed when accessing the KVM it would make sense to make it switchable.

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Anonymous user #9

13 months ago

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I would also like to be able to control the fan. It is currently louder than the PC being controlled.

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Anonymous user #7

18 months ago

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INFO --- => [ERR] [src/audio.c:_pcm_thread:190] == ustreamer/audio -- Fatal: Can't capture PCM f>

Oct 09 04:46:51 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Pipeline closed

Oct 09 04:46:52 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Detected host audio

Oct 09 04:46:52 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Pipeline configured on 48000Hz; capturing ...

Oct 09 04:47:03 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => [ERR] [src/audio.c:_pcm_thread:190] == ustreamer/audio -- Fatal: Can't capture PCM f>

Oct 09 04:47:03 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Pipeline closed

Oct 09 04:47:04 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Detected host audio

Oct 09 04:47:04 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Pipeline configured on 48000Hz; capturing ...

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Walker

18 months ago

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you can contact us via our email: support@geekworm.com we will do our best to solve your problem

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Anonymous user #7

18 months ago

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Is audio over hdmi supported on this model? It is supported by pikvm, and everything looks right but sound doesn't come through. I checked the Janus journal file and noted a repeating pattern of the following:

INFO --- => [ERR] [src/audio.c:_pcm_thread:190] == ustreamer/audio -- Fatal: Can't capture PCM f> Oct 09 04:46:51 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Pipeline closed Oct 09 04:46:52 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Detected host audio Oct 09 04:46:52 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Pipeline configured on 48000Hz; capturing ... Oct 09 04:47:03 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => [ERR] [src/audio.c:_pcm_thread:190] == ustreamer/audio -- Fatal: Can't capture PCM f> Oct 09 04:47:03 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Pipeline closed Oct 09 04:47:04 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Detected host audio

Oct 09 04:47:04 pikvm kvmd-janus[522]: kvmd.apps.janus.runner INFO --- => == ustreamer/audio -- Pipeline configured on 48000Hz; capturing ...

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Walker

18 months ago

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Hello, PKVM-A8 supports audio in hardware, but we have not tested it in software. Although there is an audio interface on x630-A8, the current product list does not come with a matching audio cable.

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Anonymous user #6

18 months ago

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Is there a way to use the NVME X876 module with the KVM-A8 kit?

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Walker

18 months ago

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Hello, we have not tested PIKVM-A8 and X876 used together. You can refer to X652, This product may meet your needs.

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Anonymous user #5

18 months ago

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Anyone know if this device will work with an orange pi 4 compute module? It is far more cost effective.

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Walker

18 months ago

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Hello, KVM-A8 only supports Raspberry Pi 4B and does not support orange pi 4 compute module.

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Anonymous user #4

19 months ago

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Why is the A8 so much more than the A3? It has less parts and no case!

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Walker

19 months ago

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KVM-8 is designed for user convenience, it is directly inserted into the computer case as a PCI card. So, you can put a computer into your computer. It does not require additional cables and is more convenient to users

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Anonymous user #4

19 months ago

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Yes, I can see that - the A8 is the one I'd prefer. But it has less cables, no case, one less PCB, so it's cheaper for you to make... but it's 20% more expensive to buy! It's made me not want to buy it

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Walker

19 months ago

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Hello, KVM-A8 may be different from KVM-A3 in terms of chip and composition. So the cost of KVM-A8 is higher

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Anonymous user #2

20 months ago

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Hello, What is the polarity of the "TO PANEL" connector? Is the pin on the side closest to the board positive or negative?

Sorry if I missed the description. Thanks in advance.

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Harry

20 months ago

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What is the polarity of the "TO PANEL" connector?

Answer: The end of the cable from the PANEL will have an identifier

Is the pin on the side closest to the board positive or negative?

Answer: This depends on your computer motherboard, please refer to your motherboard manual, you can find your motherboard manual on the Internet

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Anonymous user #2

20 months ago

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Harry, thanks for your reply.

I was writing vaguely. I was understanding the polarity of the LEDs on the case. I couldn't figure out which pin of the "TO PANEL" connector on the X630-A8 board should have positive polarity. But it resolved. I looked at the packing list. The polarity was written on the silk on the side that was hidden after assembly.

Thank you.

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Harry

20 months ago

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You are welcome ^_^

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Anonymous user #3

20 months ago

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This was kind of driving me nuts, too. The diagram doesn't really show the polarity. To add what Anonymous user #2 said for anyone who comes here looking for the same thing we were. The top row is positive, and the bottom row is negative.

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Anonymous user #1

21 months ago

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Hello,

In your example with the Asus motherboard the connections with the power switch and the reset switch are reversed. Why?

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Walker

20 months ago

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Hello, we don't know what kind of interface inside the Asus motherboard, this may be related to the type of computer

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