https://www.cnx-software.com/2021/01/15/h2-net-card-adds-four-2-5-gbe-ports-to-odroid-h2-h2-sbcs/
Interesting 2.5G capable SBC and the add-on M2 card.
H2 Net Card:
4x Ethernet ports up to 2.5 GbE via RTL8125 controller.
M.2 edge connector
Compatible with ODROID-H2 / H2+
ODROID-H2+ specifications:
SoC – Intel Celeron J4115 Gemini Lake Refresh quad-core processor @ 1.8 GHz / 2.5 GHz (turbo single thread) / 2.3Ghz (turbo multi-thread) with 12EU Intel UHD Graphics 600 up to 700 MHz; Noted listed on Ark Intel just yet, but it’s real.
System Memory – Dual-channel Memory DDR4-PC19200 (2400MT/s) supporting up to 32GB RAM in total
Storage – M.2 PCIe 2.0 x4 slot for one NVMe storage, 2x SATA 3.0 ports, eMMC flash support
Video Output
HDMI 2.0 up to 4K (4096×2160) @ 60 Hz
DisplayPort 1.2 up to 4K (4096×2160) @ 60 Hz
Audio – HDMI, audio jacks for HP, MIC. and S/PDIF
Connectivity – Dual 2.5 Gigabit Ethernet (RJ45) via RTL8125B chipset
Expansion – 24-pin header with I2C, UART (3.3V), USB2.0 and HDMI CEC signals
Misc – RTC battery (Included)
Power Supply – 14V to 20V DC power input
Dimensions – 110x110x43mm
Weight – About 320 grams with heatsink, two DRAM modules, and M.2 NVMe SSD.