Features: Graphics card compatibility: support for new graphics cards shipped after 2015 (old graphics cards shipped before 2014 are not supported) Mainboard compatibility: Notebook, mainboard NOTE:only supports M.2 NVMe interfaces Does not support M.2 Sata interfaces, does not support M.2 WiFi interfaces, does not support M.2 WWAN interfaces Power Description: The model that supports the power supply is 12V/18A/220W power supply, or the standard power supply. Please prepare or purchase the power separately. Note: all cable doesn't support the machine with 2x CPUs. Specifications: Product Model: R3G series product Product Name: Graphics Card External Adapter Board Extension Cable Bandwidth speed: PCIe4.0x4 (64G/s) Model Description: R43SG (M.2 NVMe interfaces) Wire length: approx 25cm/9.84in 50cm/19.7in Installation steps: 1. Install the hexagonal pillars and insert the graphics card into the PCIe x16 slot. The screw is tightened so that the graphics card will not shake or fall off. 2. Install power supply or D power supply, including graphics card power cord should also be connected, after installed, D power supply will light orange lights. 3. You can plug in the M.2 cable when the computer is off. After power on, the power supply will automatically start the fan to turn. If you use the D power supply, the green light will turn on. At this time, the R3G board will turn on two green light. System will recognize the card automatically. Please install the graphics card driver. The installation of the driving process may prompt the computer to restart. Note: 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: 1PC Graphics Card External Adapter Board Extension Cable