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X872
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==Overview==
'''NOTE''': X872 is sold out, you can refer to [[X873]] for new NVME shield.
This is the X872 NVMe M.2 SSD Storage Expansion Board for Raspbeerry Pi 4 model B, it provides a complete storage solution for raspberry pi 4. It supports multiple M.2 NVMe SSD lengths including: 2280, 2260, 2242, 2230. X872 is upgraded from [[X870]] and basically redesigned in X870, you can use it as a mobile SSD hard also.
* SSDs use exceptionally high performance storage media that will run hot when under load
* Older SSD drives with less efficient flash media may not perform as well as newer drives
* '''USB 3.0 devices might generate radio frequency interference that can cause Wi-Fi and other wireless devices operating in the 2.4GHz band to have issues communicating with your Raspberry Pi4. To avoid interference on the 2.4GHz band using Wi-Fi, try using the 5GHz band instead. If problem still exists, please turn off WiFi and use the wired network instead.'''
==Installation Guide==
*About USB boot please refer to [[Does the X825/X855 support USB boot]]
* Raspberry Pi Storage Benchmarks: https://jamesachambers.com/raspberry-pi-storage-benchmarks/
* [https://www.howtoraspberry.com/2020/10/how-to-install-an-m-2-hard-drive-on-a-raspberry-pi-4/ How to Install an M.2 hard drive on a Raspberry Pi 4 ?] Thanks John MacDowall!
==FAQ==
'''Q0:<span style="color:red">What to do if you find the SSD is not recognize?'''</span>
A:
1. Please confirm that you use the SSD with right interface which match with the socket of your expansion shield. (Not recommend to use SAMSUNG SSD, as there will be BIG EMC interference.)
2. If use WiFi, please try to close WIFI to test.
3. Please use right M.2 NVME SSD (KEY-M) to X872. ('''We found that some buyer use M.2 sata SSD to X872, it's wrong!!!''') 4. Please try provide extra power to X872. 5. <span style="color:red;">Please test and make sure your Raspberry Pi4 USB3 port is good one</span>. (We get some feedback that Pi 4 USB3 port is easy to broken)
If still any issue, please email us at '''support@geekworm.com''' and provide the follow information:
A7:This is not tested. Here is the chip information for your reference: The JMS583 supports TRIM to the SSD and can transmit and receive data by both of USB Mass Storage Class Bulk-Only Transport (BOT) and USB Attached SCSI Protocol (UASP) to and from the host respectively.
Q8: Can i power this pi4 and the nvme ssd all with power over ethernet if i add the correct hat?
A8: Yes, it is ok, and you can consider to use the [[X765]].
==Matching Metal Case for X872==