Features: brand new and high quality Onboard 4-port PCIE Gen 2 X 1 expansion ports, for PCIE Gen 1 X 1 Support PCIE interface 5V/12V power supply can also be powered through 12V for DC interface Adopt ASM1184 main chip control, driver-free plug and for play ASMedia improved chip can support PCIE 2.0 full-speed transmission, stable operation Direct insertion into PC motherboard is not supported Specifications: Item: 1 to 4 PCIE Gen 2 Expansion Board Fit for: for Computer Module 4 CM4 Onboard series Port: PCIE 2.0 4 Ports Size: Mixed Material: PCB Color Black Package Includes: 1 PC x PCIE Expansion Board 1 Set x Screws note: 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!