Add four usb 30 ports with two independent channels lpsata power and charging support to your pc through a pci express slot the pexusb3s42v 4 port pci express usb 30 card lets you add four usb 30 ports with two dedicated 5 gbps channels to your pcie x4 enabled pc this independent port architecture improves usb 30 performance by transferring data on two individual channels to your computer giving you faster file transfers when multiple devices are connected traditional single bus u