Interface: Interface: Single-Lane (x1) PCI Express Gen2 Mode
With 9.5mm Length low profile bracket and standard bracket.
You need to install the NEC USB3.0 driver for your computer first.
Port: 4 external USB3.0 ports
4 Ports PCI-E to USB 3.0 HUB PCI Express Expansion Card Adapter 5Gbps for Motherboard