This is the upgraded version TH3P4G3 , the -compatible GPU Dock. If your laptop have -compatible 3 or -compatible 4 interface, you can use it to connect a external graphic so that to play game,video editing, processing and so on.It comes with SFX and ATX holder, so that you can use it more convenient.Note:It does not support the for with M1 chip.When you use OS for , it only support for AMD version graphic card. And when you use Windows system for , it only support version graphic card.Note: the graphic card and is not included Specification:Model: TH3P4G3miniProduct size: 166mm x 91mm x 28mmWeight: 230gInterface: -compatible 3/4Speed: 40GbpsDaisy Chain: Supported supply: ATX / SFX / FLEX / othersGraphics Card Size: UnlimitedOther functions: USB3.0 extended supportPD charging: support (Max Max 20V3A@60W)USB function: USB: 5V2A / Type-C: 5V3ANote: The default SFX ATX bracketMaterial: Metalcolour: black + silverPackage Contents:1 x TH3P4G3 -compatible GPU Dock1 x 0.5m -compatible Data Cable1 x SFX Holder1 x ATX Holder1 x ScrewdriverOnly 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.