GRAB-S-PCIe1-USB3-4X4X-LP. Four USB3.0 channels with four USB3.0 ports, PCI-E 4X. Each USB3 port has a dedicated USB chip to make sure you can run 4 USB3 cameras on full speed with this interface card. The card is delivered including a low-profile plate, therefore the interface card can be used in industrial low profile computers and standard computers.