PoE-M.2-HAT+B User Guide

Overview

Introduction

The POE M.2 HAT+(B) is a combination of Power over Ethernet (PoE) and PCIE to M.2 for the Raspberry Pi 5 that supports the IEEE 802.3af/at networking standard. It supports M.2 NVMe hard drives in 2230, 2242, 2260, and 2280 sizes, and supports SSD boot for the Raspberry Pi

Features

Standard Raspberry Pi 40pin GPIO extension header, supports Raspberry Pi 5 (not applicable to PI4B and PI3B)
- Supports Power over Ethernet (PoE), supports IEEE 802.3af/at PoE network standard
Adopts fully isolated Switch Mode Power Supply (SMPS) mode power
Supports NVMe protocol M.2 interface hard drives, featuring high-speed read and write, and high work efficiency
PCI-E×1 Gen2 or Gen3 mode
Only supports PI5B
Compatible with M.2 hard drives of 2230 / 2242 / 2260 / 2280 sizes
Onboard operational indicator lights, the PWR is continuously lit when powered on, and the ACT blinks during read and write operations, making the operational status easily visible

Specifications

PoE input voltage: 37V ~ 57V DC input
PoE-GPIO pin header: 5V 4.5A (MAX)
PoE-2P pin header: 12V 2A (MAX)
Network standards: Supports IEEE 802.3af/at PoE
Product size: 56.5mm × 70.0mm

Working with Raspberry Pi

Plug the POE M.2 HAT+ into the Raspberry Pi 5 as shown in the figure below

Note

If a power supply limitation prompt appears

Add usb_max_current_enable=1 to /boot/firmware/config.txt

Installation

Hard disk mounting

1. Enable PCIE interface

PI5B defaults to not having the PCIE interface enabled. Add to /boot/firmware/config.txt:
dtparam=pciex1

2. PCIE is gen2 by default, if you need to enable PCIE gen3, then add following to /boot/firmware/config.txt:

dtparam=pciex1_gen=3

3. After the modification, restart the PI5, and the device can be recognized.

As shown in the figure below, SM2263 is identified as my SSD solid state drives, and the other PI5 is the RPI chip

4. Partition, skip this step if you have partitioned and formatted on other platforms (Note: partitioning will delete all data on the SSD, proceed with caution)

Lsblk     This command is executed to view the disk (if you want to see the details, run the sudo fdisk -l command)

Partition: 
sudo fdisk /dev/nvme0n1    The device number is the total device number, do not add p1, that is just a partition
How to use the partitioning tool fdisk:
N New partition
q Quit without saving
p Print the partition table
m Print the selection menu
D Delete the partition
w Save and exit
t Modify the ID number
Add the partition and execute n, then save and exit with w

5. Format

sudo mkfs.     Execute the command and press Tab key, you will see a lot of different suffixes, and the different suffixes are the formats you need to format
If I want to format it in ext4 file format, then execute the command:
sudo mkfs.ext4 /dev/nvme0n1p1
Wait a moment, once all "done" appear as below, it indicates that the formatting is completed

6. Mount

Create a mount directory
sudo mkdir toshiba
Mount the device
sudo mount /dev/nvme0n1p1 ./toshiba
Check the disk status
df -h

Read/Write test

Enter the directory where the disk is mounted

cd toshiba

Free up the memory

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

Copy Raspberry Pi memory content to the hard disk (write)

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

Copy the hard drive content to the Raspberry Pi memory (/etc/fstab read )

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

Note: The test results vary for different cards and environments. The Raspberry Pi is significantly affected. If you want to test accurate performance, use a PC for the test

Auto mount

Test shows there's no issue. If it's not required to be used as a system disk, but only for expanding the disk, set it to auto-mount

sudo nano /etc/fstab

#Add at the end
/dev/nvme0n1p1  /home/pi/toshiba  ext4  defaults  0  0
#/dev/nvme0n1p1 is the device name, /home/pi/toshiba refers to mounting to a directory, ext4 is the file system type, defaults uses the default mount option
#Make the changes take effect (reboot only after testing, otherwise it will fail to mount and boot)
sudo mount -a

#Then reboot
Check the device with lsblk

NVMe SSD boot

Boot the Raspberry Pi with a TF card first, mount and test it, and make sure the hardware can work properly

Choose one of the following methods

Method 1

1. Run the following command:

sudo raspi-config

2. Reboot Raspberry Pi

If you find you can't modify it multiple times, please reconnect to the network and then try to modify it (wait for the network to self-calibrate), or modify the file after setting the correct time

3. Flash the system to NVME, then connect the NVME to the expansion board, remove the TF card and power it on again

Method 2

1. Modify the BOOT_ORDER in the Raspberry Pi boot loader configuration:

sudo rpi-eeprom-config --edit 
Modify BOOT_ORDER=0xf41 to BOOT_ORDER=0xf416

For more information, please refer to BOOT_ORDER

2. Reboot Raspberry Pi

If you find you can't modify it multiple times, please reconnect to the network and then try to modify it (wait for the network to self-calibrate), or modify the file after setting the correct time

3. Flash the system to NVME, then connect the NVME to the expansion board, remove the TF card and power it on again