PCIe TO M.2 (B)

PCIe TO M.2 (B)

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Overview

PCIe TO M.2 (B) is a PCI-E to M.2 adapter card, for upgrading Solid State Drive, supports CM4.Does not support PI5

Features

• Support NVMe protocol M.2 interface Solid State Drive protocol, high-speed write/read, higher working efficiency.
• Only support CM4 HAT.
• Supports Raspberry Pi Compute Module 4.
• Compatible with M.2 solid state drive in different sizes.
• The LED lights up when power-on, and keeps blinking while reading/writing.

User Guide

Mounting Hard Drive to CM4

Format

• Insert the SSD into the corresponding slot of the PCI-E to M.2 adapter, and secure it with the screws provided in the screw package.
• After powering up and booting, execute "lspci" to check the PCIE device.

• Execute "sudo mkfs.ext4 /dev/nvme0n1p1" to format the device. ("Type "mkfs." and then press the "tab" key to see various suffixes representing different formats you can use for formatting.)

Wait for a few moments, when "done" appears, it means that the formatting has been carried out. 

Mount the Device

• Create a directory to mount:

sudo mkdir toshiba

• Mount the device:

sudo mount /dev/nvme0n1p1 ./toshiba

• Check the SSD status:

df -h

Mount the Hard Drive

• Create a new directory as the mount point for the hard drive.

sudo mkdir /home/pi/toshiba

• Execute the following commands to mount the hard drive:

sudo mount /dev/nvme0n1p1  /home/pi/toshiba

Execute again:

df -h

Then you can see the hard drive we inserted and the related information, indicating that it has been mounted successfully.

• For different hard drives, their names are different, and here is "nvme0n1p1", please refer to the hard drive you inserted.

Reading/Writing Test

Enter the directory to mount the hard drive:

cd /home/pi/toshiba

• Release caches:

sudo sh -c "sync && echo 3 > /proc/sys/vm/drop_caches"

• Copying the contents of the Raspberry Pi's memory to the hard drive (Read):

sudo dd if=/dev/zero of=./test_write count=2000 bs=1024k

• Copying hard drive content to Raspberry Pi memory (Write):

 sudo dd if=./test_write of=/dev/null count=2000 bs=1024k

• Note: the test result may vary due to different adapters and environments, and the Raspberry Pi is more susceptible.
  

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