For Raspberry Pi 5 has a 16Pin PCIE interface, we can use this interface to expand a variety of peripherals. This time we used the PCIE interface with the PCIE Switch chip to expand it into two PCIE interfaces and then used the RTL8125 chip to achieve dual 2.5Gbps Ethernet expansion. This expansion board can be automatically identified as eth1 and eth2 after powering on the for Raspberry Pi system without the need for a driver. If you use an ubuntu system, you need to install the RTL8125 driver before you can use it. Due to different batches, the appearance, color and printed words of the product may vary, which will not affect the use. Colour:Blue Material:PCB Package Contents: 1 * MP2.5GD for Rasbperry Pi 5 PCIE to Dual 2.5G Ethernet Expansion Board Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.