Features:brand new and high qualityOnboard 4-port PCIE Gen 2 X 1 expansion ports, for PCIE Gen 1 X 1Support PCIE interface 5V12V power supply can also be powered through 12V for DC interfaceAdopt ASM1184 main chip control, driver-free plug and for playASMedia improved chip can support PCIE 2.0 full-speed transmission, stable operationDirect insertion into PC motherboard is not supportedSpecifications:Item: 1 to 4 PCIE Gen 2 Expansion BoardFit for: for Computer Module 4 CM4 Onboard seriesPort: PCIE 2.0 4 PortsSize: MixedMaterial: PCBColor: BlackNote:This product does not include CM4 CM4 official expansion board and CM4 IoT industrial control motherboard.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package includes:1 PC x PCIE Expansion Board1 Set x Screws