Multipurpose LED Strip Testing Instrument with Output Voltage and Current Display for Efficient TV B USB3.1 expansion; support PD charging (maximum 60W); dual thunderbolt interface supports daisy chain. Use 12V DC power adapter or PD through-cheat line to directly power the graphics card dock, which can easily drive low-power devices such as network cards, hard drives, and acquisition cards. Desktop mode: After installing the power baffle, you can directly use ATX.SFX-L.SFX and other specifications of the power supply. There will be no restrictions on the size of the graphics card used, whether it is a single slot, dual slot, or even a three-slot or four-slot graphics card, it can be easily used. Note: the graphic card and power is not included! Colour:Black Material:Metal Package Contents: 1 x Graphics Amplifier 1 x ATX to SFX bracket 1 x TB4 cable Only 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.