Card Low Profile 4 Ports PCI-E to USB 3.0 HUB 5Gbps PCI Express Expansion Adapter 5Gbps for Motherboard. You need to install the USB 3.0 driver for your computer first.. With 9.5 mm Length low profile bracket and standard bracket.. Bundling in USB 3.0 with up to 5GBit / s. The adapter is a converter to convert the available PCI-E 1x of a motherboard into Four USB 3.0 header.