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===1. Flash OS into the micro SD card===
If you use CM4 without emmc, you mush purchase a micro sd memory case, then follow the instructions here, a minimum 16 Gb class 10 memory card is recommended.
Please refer ===Flash OS Image===Due to [https://wwwCM4 has a version with eMMC, micro SD card is optional. If you are using the CM4 with eMMC, you don't need to buy a extra Micro SD card.raspberrypi You flash the OS image into different media according to your own situation.com/documentation/computers/getting-started ====1.html#installing-Flash OS into the-operating-system Official installation tutorial]micro SD card====:A minimum 16 Gb class 10 memory card is recommended.
===2. Flash OS into the eMMC of CM4===You can falsh OS into the eMMC if you use the CM4 '''with eMMC''', :Please refer to [https://www.raspberrypi.com/documentation/computers/getting-started.html#installing-the following step, thus you don't need purchase the Micro SD card-operating-system Official installation tutorial]
1====2. Short OTG PinFlash OS into the eMMC of CM4(Optional)====:You can falsh OS into the eMMC if you use the CM4 '''with eMMC''', refer to the picture belowfollowing step.
[[File:X515-IMG-5890-1.jpg|500px]]Short OTG Pin, refer to the picture below.
2. Connect Type:[[File:X515-C OTG with a TypeIMG-A to Type5890-C cable to your computer1.jpg|500px]]
3:2. Power Connect a computer that will be used to load the device via PWR eMMC to the USB C port on the CM4-M2 board. The computer will provide both power and data to the CM4. (Type-A to Type-C with your 5V Power adaperOTG cable need to be purchased seperately)
4:3. Then rerfer to [https://www.jeffgeerling.com/blog/2020/how-flash-raspberry-pi-os-compute-module-4-emmc-usbboot this tutorial] to flash raspberry pi OS
5:4. Remove the jumper of OTG after flashing is complete, then restart your device;
==User Manual==
===Installation Video===
For NASPi CM4-2.5 and NASPi CM4-M2: https://youtu.be/lXBK5-GFQ48
{{#ev:youtube|https://youtu.be/lXBK5-GFQ48}}
Please follow the steps below
:'''PS：If you use CM4 with eMMC, then SD card cannot be used.'''
===3. Preconfigure Device for CM4===
We can preconfigure your CM4 device by plugging mico sd via sd reader into a windows computer / Pi. You should see the “boot” volume where we can preconfigure our CM4 to be working right from the start.
====3.1 Enable USB Ports====:When mounted in the IO board the USB ports will not function without making a change to config.txt and adding an overlay.
:Add the following line to config.txt:
dtoverlay=dwc2,dr_mode=host
:After adding this line the two USB ports (as well as the “External USB” header) will function the next time the CM4 boots.
====3.2 Enable SSH====:It's very useful to have SSH enabled when working with the Compute Module 4. It is enabled simply by creating an empty file named:
touch ssh
:in the root folder of the “boot” volume (the top-most folder of the drive where start4x.elf, fixup.dat and those files are located)
:Now when the Pi starts up SSH will automatically be enabled!
:PS: This step is optional, you can also enable ssh through the <code>raspi-config</code> program after the device boot
====3.3 Preconfigure WiFi / Wireless(Optional)====:You can also preconfigure the Compute Module 4 (and any Pi) by creating wpa-supplicant.conf at the base of the “boot” volume like we did with “ssh” file. In fact, you can setup your wifi after you boot up.
:Create a new file named wpa-supplicant.conf that contains the following:
<pre>
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
==FAQ==
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Q: How to enable the POE option?
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A. The POE header on X515/X510 is reserved to be compatible with the official POE+ HAT. But we don't know if the case will be compatible with the installation of official POE+ HAT.
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</div>
==Video==