This is a Power over Ethernet (PoE) mini expansion board for Nano/NX motherboard, supporting the IEEE 802.3af/at network standard. If you already have a PoE router or switch that supports this network standard, with this expansion board, you only need to plug in a network cable to enable the for motherboard to achieve networking and power supply functions. For use with for Nano or for NX Supports PoE Power over Ethernet, supports IEEE 802.3af/at PoE network standard Adopts fully isolated switch mode power supply (SMPS) Adopting a more compact component layout scheme, the overall volume is smaller and the use is more flexible Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Colour:Black Material:PCB Package Contents: 1 * POE Power module 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.