LRSU3A42-4A(3U) is a PCI Express 3.0 x4 quad-port USB3.1 Type A 10Gb USB3.0 adapter developed based on the ASM3142 master control solution. This USB3.1 adapter supports PCle 3.0 and USB 3.1 specifications, supports 10Gbp high speed, it bridges the PCle interface to the four ports of USB3.1, enabling the external storage device to have a higher transfer rate. The speed of USB3.1 is twice that of USB3.0, much higher than the speed of USB2.0. It can connect four USB3.1 devices at the same time, and is backward compatible with USB3.0, USB2.1, USB2.0, USB3.1, PCle 3.0, PCle 2.1, PCle2.0 interface specifications; at the same time LRSU3A42-4A(3U) The ports support hot-swapping, allowing users to connect and disconnect external drives as needed while in use.