StarTech.com 4 Port Quad Bus PCI Express PCIe USB 3.0

Add 4 SuperSpeed USB 3.0 ports with Quad Bus architecture (5Gbps per port) to your PCI Express-enabled PC. The PEXUSB3S44V 4-Port PCI Express USB 3.0 Card lets you add four quad bus USB 3.0 ports to your PCIe x4-enabled PC. Quad bus architecture improves USB 3.0 performance by transferring data on independent channels to your computer, giving you faster file transfers.When multiple devices are connected, traditional single bus USB 3.0 cards share your maximum bandwidth between all ports. By employing four host controller chipsets, each port operates on a separate independent transmission channel. Allocating up to 5 Gbps to each USB port reduces performance bottlenecks, and effectively quadruples your total available to bandwidth to 20 Gbps.Enhanced with UASP support (USB Attached SCSI Protocol), this USB 3.0 controller performs up to 70% faster than conventional USB 3.0 when paired with a UASP supported enclosure (Note: UASP requires a compatible operating system). Using a more efficient protocol than the