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Q: What to do if the X820 board could not detect the HDD or SSD?* (1) At first, please use the high quality power supply adapter, the hard disk will not be recognized if you use the low quality power supply, as the current of this power supply is not enough.* (2) Please run 'lsusb' command under linux terminal, and save the screenshot of the result, then send it to our email: support@geekworm.com, then we will figure out your problem together.* (3) Please remember to send us your '''order number and the website''' you ordered to us when you contact us for the X820 problem by email: support@geekworm.com.Thank you! Q: What is a recommended HDD for this board?'''
</gallery>'''Q: Why can't boot from the SSD or HDD?'''
Q:Is there really a 4tb limit? Will this X820 board not work with 6tb or 8tb?
* Theoretically it can work with 6tb or 8tb as well. But actually we do not test the X820 board with 6tb or 8tb HDD, hope to get your understanding!
X820
,'''Q: With a hard drive installed, could you eleminate the need for a micro sd card and boot straight from drive?'''
* Please refer to the "[[#How to boot from a USB Mass storage device on a raspberry pi 3" below.]]
* Basically it can support all the 2.5-inch HDD with SATA 2 or STATA 3 interface.
'''Q: How to do if I don't like the blue light on the power switch?'''
* It is ok to disable the blue light on the power switch, you just need to pull out the white cable. Please refer to the picture.
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Turn-off-led-IMG-20181108-095055.jpg|Caption1
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* Customer Feedback 1: I have followed the same steps you provided and my ssd is not able to boot. I have tried again with a normal sata hard drive and it works fine. My original ssd (Patriot Burst 240gb) draws too much power. Thus, do not boot.
'''Q:Can you stack the module with itself? is the usb cable and bridge crossover?'''
*Theoretically, you can stack the X820 module to use by USB cable.
But you need to solve the problem of how to power them, if you stack them together, it may need more power. Actually we do not test on how to stack them together, hope to get your understanding!
'''Q: Why the voltage warnings shows on my Pi?'''
Customer feeback: The board works as advertised with the 4a power supply they recommend but seems to lie really close to the voltage limit. I get a number of voltage warnings while using until I stopped using the KVM switch (which had a separate power supply) and just used a USB keyboard. Outside of that, assembled just fine and was able to configure a SSD 2.5 drive without issue.
* So we suggest that you can measure the output voltage of your power supply when under load your device. Please test directly the voltage value between GND and 5V PIN.
* We found that many power supplies on the market are known as 5V 4A output, but when use this power adapter at high current output , the voltage often drops very badly, with only about 4.7V or lower than 4.7V.
'''Q: What is the pinout for the PWR Switch?''' * A: Please refer to here: [[PH2.0 Conector Specification]] Q: Does the X820 Power off switch work when the Pi is powered by USB (or PoE)?
'''Q: Does the X820 Power off switch work when the Pi is powered by USB (or PoE)?'''* A: The X820 Power off switch cannot work when the Pi is powered by USB (or PoE).
Q: Where can I buy this product?