Features:100% brand new and high qualityOnboard 4-port PCIE Gen 2 X 1 expansion ports, compatible with PCIE Gen 1 X 1Support PCIE interface 5V/12V power supply can also be powered through 12V DC interfaceAdopt ASM1184 main chip control, driver-free plug and playASMedia improved chip can support PCIE 2.0 full-speed transmission, stable operationDirect insertion into PC motherboard is not supportedPackage Includes:1 PC x PCIE Expansion Board1 Set x ScrewsSpecifications:Item: 1 to 4 PCIE Gen 2 Expansion BoardFit for: for Raspberry Pi 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