Features: This is the TH3P4 Lite version thunderbolt-compatible GPU video card dock kit. JHL7440 thunderbolt-compatible equipment terminals chip is adopted to break through the 22Gbps limitation of JHL6xxx series and castraction of JHL8xxx series PCI-E X1, it can reach the transmission speed of 32Gbps of PCI-E3.0X4(can be achieved using both thunderbolt-compatible3 or 4 data line). Suitable for laptops with thunderbolt-compatible 3 or thunderbolt-compatible 4 interfaces. Supports half height and full height brackets, comes with holder, convenient to install the graphice card, power supply and dock together. Compatible PCIe-interface calculation card, network card, acquisition card, etc. devices within 75W. Specifications: Main Material: Metal Model: TH3P4 Lite Size: Approx. 134x84x21mm/5.27x3.30x0.82inch Interface: Thunderbolt-compatible 3/Thunderbolt-compatible 4 Speed: 40Gbps Daisy-chain: not supported Power Supply: DC12V Equipment Size: un-limited Other Functions: full/half height bracket, equipment within 75W PD-Charging: None USB Function: None Note: Please allow 0-1cm error due to manual measurement. Please allow for slight color difference due to different display resolution. Package includes: 1x Graphics Video Card Dock 1x Thunderbolt-compatible Data Cable 1x Holder