1, for oculink adapter board, support devices with oculink port to expand PCIE card. 2, support M.2 port, through the standard for oculink extension cable to PCIE card. 3, support expanding GPU graphics card, PCIE network card, PCIE sound card, PCIE capture card, etc. PCIE array card only supports X4 devices. 4, the maximum bandwidth speed is PCIE 4.0 X4 GEN4, backward compatible with GEN3. 5, support ATX/SFX/small 1U power supply, the adapter board only needs to be inserted into the 24P power supply, the graphics card power supply is provided by other power supplies. Power supply should be 500W and above. 6, support synchronous start and stop following the host, does not support hot-swap. 7, only GDP handhelds with for oculink ports have been successfully tested for compatibility, other hosts with for oculink ports are still being collected. Other hosts with for oculink ports are still collecting test results. 8, the successful compatibility rate is 90% for laptops with M.2 ports, 95% for small hosts with M.2 ports, and 10% for other hosts such as industrial computers and development boards. 9, this series of kit products do not include for oculink extension cable, need to purchase separately. 10, this series of boxes do not support built-in power supply, and limit the size of the graphics card. type: A: 1 Set x Graphics Card Adapter/B: 1 x Graphics Card Adapter, 1 x Acrylic Case/C:1 x Graphics Card Adapter, 1 x Metal Case Colour:Black Material:PCB+Plastic+Metal<br><br>Package Contents: 1 Set x Graphics Card Adapter / 1 x Graphics Card Adapter 1 x Acrylic Case / 1 x Graphics Card Adapter 1 x Metal Case 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.