raspberry-pi-pcie-devices
raspberry-pi-pcie-devices copied to clipboard
geerlingguy
Add 52Pi / GeeekPi U2500 M.2 NVME Dual USB3.0 to 2.5g Ethernet for Raspberry pi 5
52Pi U2500 M.2 NVME Dual USB3.0 to 2.5g Ethernet for Raspberry pi 5
- SKU: EP-0235
- Wiki: EP-0235 - 52Pi Wiki
Description
The U2500 M.2 NVMe & dual 2.5G ethernet for Raspberry Pi 5. The Raspberry Pi HAT (Hardware Attached on Top) board you have is a versatile expansion module designed to enhance the capabilities of your Raspberry Pi 5.
Silkscreen on PCB has U2500D v1.2 and w02
NVMe
$ lspci -v -nn -s 0001:01:00
0001:01:00.0 Non-Volatile memory controller [0108]: Phison Electronics Corporation PS5019-E19 PCIe4 NVMe Controller (DRAM-less) [1987:5019] (rev 01) (prog-if 02 [NVM Express])
Subsystem: Phison Electronics Corporation PS5019-E19 PCIe4 NVMe Controller (DRAM-less) [1987:5019]
Flags: bus master, fast devsel, latency 0, IRQ 38
Memory at 1b00000000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: nvme
USB / Ethernet
$ lsusb
Bus 004 Device 002: ID 0bda:8156 Realtek Semiconductor Corp. USB 10/100/1G/2.5G LAN
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 005: ID 0665:6000 Cypress Semiconductor Gaming keyboard
Bus 003 Device 004: ID 093a:2521 Pixart Imaging, Inc. Optical Mouse
Bus 003 Device 003: ID 0b95:6804 ASIX Electronics Corp. AX68004
Bus 003 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 0bda:8156 Realtek Semiconductor Corp. USB 10/100/1G/2.5G LAN
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
USB ID 0bda:8156 Realtek Semiconductor Corp. USB 10/100/1G/2.5G LAN
$ dmesg | grep -A2 8156
[ 1.082069] usb 2-1: New USB device found, idVendor=0bda, idProduct=8156, bcdDevice=31.04
[ 1.082076] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=6
[ 1.082079] usb 2-1: Product: USB 10/100/1G/2.5G LAN
--
[ 1.129268] usb 4-1: New USB device found, idVendor=0bda, idProduct=8156, bcdDevice=31.04
[ 1.129273] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=6
[ 1.129275] usb 4-1: Product: USB 10/100/1G/2.5G LAN
Ethernet links at Speed: 2500Mb/s
$ ethtool eth1 && ethtool eth2 && ethtool eth0
Settings for eth1:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
2500baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Link partner advertised pause frame use: Symmetric Receive-only
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 2500Mb/s
Duplex: Full
Auto-negotiation: on
Port: MII
PHYAD: 32
Transceiver: internal
netlink error: Operation not permitted
Current message level: 0x00007fff (32767)
drv probe link timer ifdown ifup rx_err tx_err tx_queued intr tx_done rx_status pktdata hw wol
Link detected: yes
Settings for eth2:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
2500baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Link partner advertised pause frame use: Symmetric Receive-only
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 2500Mb/s
Duplex: Full
Auto-negotiation: on
Port: MII
PHYAD: 32
Transceiver: internal
netlink error: Operation not permitted
Current message level: 0x00007fff (32767)
drv probe link timer ifdown ifup rx_err tx_err tx_queued intr tx_done rx_status pktdata hw wol
Link detected: yes
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: Transmit-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised pause frame use: Transmit-only
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Link partner advertised pause frame use: Symmetric
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Auto-negotiation: on
master-slave cfg: preferred slave
master-slave status: slave
Port: Twisted Pair
PHYAD: 1
Transceiver: external
MDI-X: Unknown
netlink error: Operation not permitted
Link detected: yes
Nice looking HAT! I love the functionality, reminds me a lot of the Radxa Dual 2.5G HAT, though with a quite different architecture — #647
Have you done any testing with both interfaces running full blast through iperf3 at the same time? Seems like this architecture could work out okay.
Taking up both USB 3.0 ports is a little tricky but if you just need a 2.5 Gbps router... this doesn't sacrifice the PCIe bandwidth for that!
The board is now on the site here: https://pipci.jeffgeerling.com/hats/52pi-nvme-dual-2.5g-eth-hat-u2500-w02.html
I haven't done much (any?) testing yet. I created a custom OpenWRT image using their webpage and will be using that as router testbed setup.
Any pointers to what kinda of testing you'd like to see would be welcome.
@idcrook - I'd love to see if you can have two computers (or one with a 10+ gbps connection) be iperf3 -s servers, and then start two iperf3 -c [ip address of server] connections out from the Pi, one over each interface. Setting up the networking for that can be a burden though, because Linux tends to like sending packets over one connection... so you'd get a total of 2.3 Gbps no matter what.
In the past I would set up two separate local networks, or just direct connect the two Ethernet ports to two different computers, with custom IPs for each, so I could be sure packets would flow through the individual ports and not get re-routed since they'd be on the same network.
@geerlingguy OK tested using iperf3 on Raspberry Pi OS Desktop 64-bit. here's the details:
testing 52Pi NVMe + dual 2.5G Eth HAT
I have no 10Gbit Ethernet hardware, so testing is has been done using generic 2.5 Gbit switch.
- Raspberry Pi 5 4GB with NVMe SSD
- Windows, Linux hosts with RTL8125 PCIe cards
- M1 Mac mini with onboard 1G
- 2.5G in a sonnettech thunderbolt docking station
iperf3 summaries
- single port onboard 1G: 944 Mbits/sec (full speed)
- single port 2.5G : -2.34 Gbits/sec (full speed)
- dual port 2.5G : ~1.0 - 1.3 Gbits/sec on each
- all 2.5G ports on the same 2.5G switch
- dual port 2.5G plus 1G onboard:
- 1G onboard : 944 Mbits/sec (full speed)
- 2.5G: ~400-900 Mbits/sec
strange observation Onboard 1G to macOS iperf (2.5G Eth in docking station) - 1.85 Gbits/sec (double theoretical peak 1G speed)
Guess Linux IP stack maybe isn't always faithful when it sends packets...
single port on-board 1G
Onboard 1G to macOS iperf (1G onboard Mac mini)
a different 1G switch for 1G connection
$ iperf3 -B 192.168.50.38 -c 192.168.50.7
Connecting to host 192.168.50.7, port 5201
[ 5] local 192.168.50.38 port 51645 connected to 192.168.50.7 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 115 MBytes 964 Mbits/sec 0 878 KBytes
[ 5] 1.00-2.00 sec 112 MBytes 944 Mbits/sec 0 878 KBytes
[ 5] 2.00-3.00 sec 112 MBytes 944 Mbits/sec 0 878 KBytes
[ 5] 3.00-4.00 sec 112 MBytes 944 Mbits/sec 0 878 KBytes
[ 5] 4.00-5.00 sec 111 MBytes 933 Mbits/sec 0 878 KBytes
[ 5] 5.00-6.00 sec 112 MBytes 944 Mbits/sec 0 878 KBytes
[ 5] 6.00-7.00 sec 112 MBytes 944 Mbits/sec 0 878 KBytes
[ 5] 7.00-8.00 sec 112 MBytes 944 Mbits/sec 0 878 KBytes
[ 5] 8.00-9.00 sec 111 MBytes 933 Mbits/sec 0 878 KBytes
[ 5] 9.00-10.00 sec 112 MBytes 944 Mbits/sec 0 878 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.10 GBytes 944 Mbits/sec 0 sender
[ 5] 0.00-10.01 sec 1.10 GBytes 941 Mbits/sec receiver
single port (USB to 2.5GB)
HAT 2.5G port 1 to Windows iperf
.\iperf3.exe -B 192.168.50.33 --server
-----------------------------------------------------------
Server listening on 5201 (test #1)
-----------------------------------------------------------
Accepted connection from 192.168.50.39, port 56309
[ 5] local 192.168.50.33 port 5201 connected to 192.168.50.39 port 52613
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 278 MBytes 2.33 Gbits/sec
[ 5] 1.00-2.00 sec 278 MBytes 2.34 Gbits/sec
[ 5] 2.00-3.00 sec 278 MBytes 2.34 Gbits/sec
[ 5] 3.00-4.00 sec 278 MBytes 2.34 Gbits/sec
[ 5] 4.00-5.00 sec 278 MBytes 2.34 Gbits/sec
[ 5] 5.00-6.00 sec 278 MBytes 2.34 Gbits/sec
[ 5] 6.00-7.00 sec 278 MBytes 2.34 Gbits/sec
[ 5] 7.00-8.00 sec 278 MBytes 2.34 Gbits/sec
[ 5] 8.00-9.00 sec 278 MBytes 2.34 Gbits/sec
[ 5] 9.00-10.00 sec 278 MBytes 2.34 Gbits/sec
[ 5] 10.00-10.00 sec 384 KBytes 2.13 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 2.72 GBytes 2.34 Gbits/sec receiver
HAT 2.5G port 2 to Linux iperf
iperf3 -B 192.168.50.31 --server
Server listening on 5201 (test #2)
-----------------------------------------------------------
Accepted connection from 192.168.50.40, port 55013
[ 5] local 192.168.50.31 port 5201 connected to 192.168.50.40 port 40749
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 1.00-2.00 sec 280 MBytes 2.35 Gbits/sec
[ 5] 2.00-3.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 3.00-4.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 4.00-5.00 sec 280 MBytes 2.35 Gbits/sec
[ 5] 5.00-6.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 6.00-7.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 7.00-8.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 8.00-9.00 sec 280 MBytes 2.35 Gbits/sec
[ 5] 9.00-10.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 10.00-10.00 sec 256 KBytes 2.76 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 2.74 GBytes 2.35 Gbits/sec receiver
"simulataneous" dual port (USB to 2.5GB)
both 2.5G Eth through same switch
iperf3 -B 192.168.50.31 --server
-----------------------------------------------------------
Server listening on 5201 (test #1)
-----------------------------------------------------------
Accepted connection from 192.168.50.40, port 40501
[ 5] local 192.168.50.31 port 5201 connected to 192.168.50.40 port 33779
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 280 MBytes 2.35 Gbits/sec
[ 5] 1.00-2.00 sec 270 MBytes 2.27 Gbits/sec
[ 5] 2.00-3.00 sec 162 MBytes 1.36 Gbits/sec
[ 5] 3.00-4.00 sec 160 MBytes 1.34 Gbits/sec
[ 5] 4.00-5.00 sec 155 MBytes 1.30 Gbits/sec
[ 5] 5.00-6.00 sec 149 MBytes 1.25 Gbits/sec
[ 5] 6.00-7.00 sec 147 MBytes 1.24 Gbits/sec
[ 5] 7.00-8.00 sec 151 MBytes 1.27 Gbits/sec
[ 5] 8.00-9.00 sec 152 MBytes 1.27 Gbits/sec
[ 5] 9.00-10.00 sec 150 MBytes 1.26 Gbits/sec
[ 5] 10.00-10.00 sec 256 KBytes 1.46 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 1.74 GBytes 1.49 Gbits/sec receiver
.\iperf3.exe -B 192.168.50.33 --server
-----------------------------------------------------------
Server listening on 5201 (test #2)
-----------------------------------------------------------
Accepted connection from 192.168.50.39, port 46217
[ 5] local 192.168.50.33 port 5201 connected to 192.168.50.39 port 59109
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 119 MBytes 997 Mbits/sec
[ 5] 1.00-2.00 sec 121 MBytes 1.02 Gbits/sec
[ 5] 2.00-3.00 sec 126 MBytes 1.06 Gbits/sec
[ 5] 3.00-4.00 sec 132 MBytes 1.11 Gbits/sec
[ 5] 4.00-5.00 sec 135 MBytes 1.13 Gbits/sec
[ 5] 5.00-6.00 sec 130 MBytes 1.09 Gbits/sec
[ 5] 6.00-7.00 sec 130 MBytes 1.09 Gbits/sec
[ 5] 7.00-8.00 sec 132 MBytes 1.11 Gbits/sec
[ 5] 8.00-9.00 sec 264 MBytes 2.22 Gbits/sec
[ 5] 9.00-10.00 sec 278 MBytes 2.34 Gbits/sec
[ 5] 10.00-10.00 sec 128 KBytes 2.63 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 1.53 GBytes 1.32 Gbits/sec receiver
dual port 2.5G plus 1G onboard
onboard 1G
$ iperf3 -B 192.168.50.38 -c 192.168.50.7
Connecting to host 192.168.50.7, port 5201
[ 5] local 192.168.50.38 port 56517 connected to 192.168.50.7 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 116 MBytes 970 Mbits/sec 0 889 KBytes
[ 5] 1.00-2.00 sec 111 MBytes 933 Mbits/sec 0 889 KBytes
[ 5] 2.00-3.00 sec 112 MBytes 944 Mbits/sec 0 889 KBytes
[ 5] 3.00-4.00 sec 112 MBytes 944 Mbits/sec 0 889 KBytes
[ 5] 4.00-5.00 sec 112 MBytes 944 Mbits/sec 0 889 KBytes
[ 5] 5.00-6.00 sec 111 MBytes 933 Mbits/sec 0 889 KBytes
[ 5] 6.00-7.00 sec 112 MBytes 944 Mbits/sec 0 889 KBytes
[ 5] 7.00-8.00 sec 112 MBytes 944 Mbits/sec 0 889 KBytes
[ 5] 8.00-9.00 sec 112 MBytes 944 Mbits/sec 0 889 KBytes
[ 5] 9.00-10.00 sec 112 MBytes 944 Mbits/sec 0 889 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.10 GBytes 944 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 1.10 GBytes 941 Mbits/sec receiver
2.5G port 1
sleep 5 && iperf3 -B 192.168.50.39 -c 192.168.50.33
Connecting to host 192.168.50.33, port 5201
[ 5] local 192.168.50.39 port 54203 connected to 192.168.50.33 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 47.5 MBytes 399 Mbits/sec 0 218 KBytes
[ 5] 1.00-2.00 sec 58.2 MBytes 489 Mbits/sec 0 230 KBytes
[ 5] 2.00-3.00 sec 58.0 MBytes 486 Mbits/sec 0 230 KBytes
[ 5] 3.00-4.00 sec 58.3 MBytes 489 Mbits/sec 0 230 KBytes
[ 5] 4.00-5.00 sec 58.1 MBytes 488 Mbits/sec 0 230 KBytes
[ 5] 5.00-6.00 sec 61.3 MBytes 514 Mbits/sec 0 265 KBytes
[ 5] 6.00-7.00 sec 62.7 MBytes 526 Mbits/sec 0 265 KBytes
[ 5] 7.00-8.00 sec 62.7 MBytes 526 Mbits/sec 0 265 KBytes
[ 5] 8.00-9.00 sec 75.6 MBytes 634 Mbits/sec 0 395 KBytes
[ 5] 9.00-10.00 sec 147 MBytes 1.23 Gbits/sec 0 880 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 689 MBytes 578 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 687 MBytes 576 Mbits/sec receiver
2.5G port 2
sleep 3 &&iperf3 -B 192.168.50.40 -c 192.168.50.31
Connecting to host 192.168.50.31, port 5201
[ 5] local 192.168.50.40 port 51161 connected to 192.168.50.31 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 132 MBytes 1.11 Gbits/sec 0 447 KBytes
[ 5] 1.00-2.00 sec 111 MBytes 934 Mbits/sec 0 447 KBytes
[ 5] 2.00-3.00 sec 111 MBytes 928 Mbits/sec 0 447 KBytes
[ 5] 3.00-4.00 sec 111 MBytes 927 Mbits/sec 0 447 KBytes
[ 5] 4.00-5.00 sec 110 MBytes 926 Mbits/sec 0 447 KBytes
[ 5] 5.00-6.00 sec 109 MBytes 911 Mbits/sec 0 447 KBytes
[ 5] 6.00-7.00 sec 106 MBytes 892 Mbits/sec 0 447 KBytes
[ 5] 7.00-8.00 sec 107 MBytes 897 Mbits/sec 0 469 KBytes
[ 5] 8.00-9.00 sec 108 MBytes 907 Mbits/sec 0 469 KBytes
[ 5] 9.00-10.00 sec 169 MBytes 1.42 Gbits/sec 0 615 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.15 GBytes 985 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 1.14 GBytes 982 Mbits/sec receiver
Onboard 1G to macOS iperf (2.5G Eth in docking station)
$ iperf3 -B 192.168.50.38 -c 192.168.50.2
Connecting to host 192.168.50.2, port 5201
[ 5] local 192.168.50.38 port 55375 connected to 192.168.50.2 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 222 MBytes 1.87 Gbits/sec 13 445 KBytes
[ 5] 1.00-2.00 sec 221 MBytes 1.86 Gbits/sec 0 717 KBytes
[ 5] 2.00-3.00 sec 220 MBytes 1.85 Gbits/sec 23 427 KBytes
[ 5] 3.00-4.00 sec 220 MBytes 1.85 Gbits/sec 0 707 KBytes
[ 5] 4.00-5.00 sec 221 MBytes 1.86 Gbits/sec 25 510 KBytes
[ 5] 5.00-6.00 sec 220 MBytes 1.85 Gbits/sec 0 724 KBytes
[ 5] 6.00-7.00 sec 221 MBytes 1.86 Gbits/sec 0 732 KBytes
[ 5] 7.00-8.00 sec 220 MBytes 1.85 Gbits/sec 22 532 KBytes
[ 5] 8.00-9.00 sec 220 MBytes 1.85 Gbits/sec 0 725 KBytes
[ 5] 9.00-10.00 sec 221 MBytes 1.86 Gbits/sec 2 619 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 2.16 GBytes 1.85 Gbits/sec 85 sender
[ 5] 0.00-10.00 sec 2.15 GBytes 1.85 Gbits/sec receiver
Okay thank you! It's at least showing that the individual ports are capable of 2.5 Gbps each, so I think the main bottlenecks will probably either be people's own networks/switches, or if doing any routing/filtering, the firewall running on the Pi's SoC.
I'm thinking one of these boards would be fun for testing.
The one downside is I'm looking into building a dual 2.5 Gbps router with NVMe storage and an M.2 E-key WiFi slot—or failing that, a USB 3.0 WiFi 6E or 7 stick capable of running a small AP (just a few users).
I'm nearly there with the Radxa HAT, but have had some trouble with the extra PCIe switch on that HAT.
I have the older model hat mine is called U5000_v1.1 I have moved to the Radxa Dual 2.5G Router Hat since this one let me down due to USB connections for the RTL8125BG chips theres just many interrupt that can't be redirected to all cores permanently.
Hi, do you have a good 3D Printed Case File for this U2500? Searched everywhere. :/ Btw, I have OpenWRT running with the 1Gbps port setup as WAN and two 2.5Gbps ports as LAN and working nice so far! I had to use r8152-firmware kmod-usb-net-rtl8152 driver for it to show up in interfaces.
do you have a good 3D Printed Case File for this U2500?
I do not. It's sitting on a shelf in my 10-inch rack mount, and quite high actually (though still under 1U) with the GPIO headers extended.
I've resorted to running electrical tape along the length of the GPIO header and folding it over yo completely cover them, so as to avoid inadvertent contact with, say, metal shelf or brackets (speaking from experience).
remixed one myself :) available in Makerworld if you are interested. U2500 2.5G Ethernet RaspberryPi 5 Rackmount Case