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'''Q: How to enable RTC?'''
A: Firstly, insert the C1220 button battery.run the following command: rw sudo nano /boot/config.txt #Then change the line: '''dtoverlay=i2c-rtc,pcf8563Q: Does x680 support proarammable switch between PC?''' to A: '''dtoverlay=i2c-rtc,ds1307NO''' #Test RTC #Display the current time of the Raspberry Pi date #Write the time of Raspberry Pi to DS1307 sudo hwclock -w #Read the time of DS1307 sudo hwclock -r ro
X680
,The IP KVM Switch supports direct switching through buttons on front panel and hotkey through keyboard connected to the special USB 1.1 port. it also supports remote hotkey switching between computers for easy monitoring.
'''About the USB OTG port of X680:''' The USB OTG port is used to control the keyboard and mouse. However, when the OTG port is in use, it prevents the control of the keyboard and mouse. The X680 utilizes the CM4 and does not have additional USB ports for connecting a USB drive.
==Features==
* Based on the Raspberry Pi Compute Module 4 and Compatible with all variants
* Designed especially for PiKVM ( Raspberry Pi based KVM over IP)
* <span style="color:red;">Only compatible with '''PiKVM V3 OS''', NOT support '''V4'''</span>
* Control up to 4 USB HDMI computers/servers remotely over an IP network or the internet
* Full remote BIOS level control access the BIOS, and have full control over the keyboard and mouse
[[File:RJ75-568B.png]]
'''RJ45 Pinout of KVM:'''
[[File:RJ45-PINOUT.png]]
==User Manual==
===Hardware connection & installation Video===
Refer to:https://youtu.be/ukHCz1RsFx4 {{#ev:youtube|https://youtu.be/ukHCz1RsFx4}} X680 HDMI port display information, according to the test: [[File:HDMI-OUT-INFO-1.jpg|700px|X680 HDMI port info]]
===OS Download & Installation===
1. Firstly, need prepair a micro sd card, a minimum 16 Gb class 10 memory card is recommended. If you use a CM4 with eMMC, you don't need a micro sd card.
:We recommend that you use the ''''V3 Pre-Assembled'''' version, and this image includes OLED display configuration.
:<span style="color:red;">Only compatible with PiKVM V3 platform OS, NOT support PiKVM V4 Plus & V4 Mini platform!!!</span>
:[[File:Pi4-V3-HAT.png|800px|PiKVM V3 platform]]
2. Switch OS to writable mode
rw
3. Edit the /boot/config.txt file, and change line <code>dtoverlay=i2c-rtc,pcf8563</code> to <code>dtoverlay=i2c-rtcds1307rtc,ds1307</code> (due to use the different RTC chip).
sudo nano /boot/config.txt
Then save & '''reboot''' the device;
Press to select PC1/PC2/PC3/PC4 through buttons on front panel. the corresponding LED located on the right of the button will be on if a PC is selected. the PC1 will be automatically selected when power applied or restored.
====Hotkey swtichingswitching====
* Keyboard must be connected to USB1.1 port (Marked with an icon of keyboard)
* Press the "Ctrl" twice quickly, then immediately press "1" to switch to PC1
ro
'''Q: Does the X680 support PoE power? How to enable PoE Power?'''
A: The X680 reserve the POE port, but need to use with customized POE module to support PoE power, and the customized POE module still not release now. And the X680 does not support the Raspberry Pi official PoE module.
Recommend to use [[PiKVM-A8]] kit, if you need PoE power.
'''Q: Why can't I switch to another PC?'''