[Pcie Riser Card ]: It solves the problem of insufficient PCIE ports on the motherboard and can expand one USB3.0 port to four. It is more stable than using a separate riser card in each motherboard PCIe slot as you 4 GPU signals on 1 PCIe . Suitable for the PCI-E 1X slot of the motherboard will not reduce the hashrate. [Litecoin support]: plug-in design that allows the use of 4 external GPUs and reduces the number of adapters. This can effectively reduce cable and power failures, data reliability, and improve work efficiency [4 Operating Systems Supported]: , Linux, Windows XP / 7/8/10. Suitable for motherboards with PCIE slots, plug & play.If you insert a PCI-E card, you must first switch off the power supply. [Easy and Convenient]:The ASM1184e chip of the adapter card does not need an additional power supply, it can work under 3.3V. Supports X4, X8 and X16 slots, It can be installed in a computer case to improve the security and stability of the GPU device. The 4 USB ports on this adapter card are PCI-E signals, not USB signals and cannot be connected to USB devices. Colour: blue Material: plastic + metal Package Contents: 1 x Pcie Riser splitter 1 To 4 4 x PCI-E GPU Riser Express Cable 16X to1X 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.