Features: USB4 external graphics card dock adopts ASM2464PD chip and PCIEX4 4.0 protocol; Support up to 40Gbps Transmission. Support USB4 protocolpSupport external GPU graphics card, PCIE networking card, PCIE sound card, PCIE acquisition card, NVME solid disk drive The bandwidth speed is PCIe 4.0x4gen4, 40G Backwards compatibility Support small 1U power supply, the adapter board needs to be into ATX24P for power supply, and the power supply for the graphics card is provided by the power supply. Power supply should be 500W and above. The external GPU graphics card can support up to 4090, and the performances can be 95%. Specifications: Main control chip: ASM2464PD Support: 40Gbps Transmission Size: about 190x66x125mm/7.48x2.6x4.92in Graphics card support: above RX570, above GTX1050ti Computer requirements: USB4 and Package Includes: 1PC USB4 External Graphics Card Dock note: Due to the problems of lighting effects, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurement.