See our UASP test results below for further details.

Using a more efficient protocol than the traditional USB BOT (Bulk-Only Transport), UASP technology optimizes transfers by allowing multiple commands to be processed simultaneously, significantly increasing transfer speeds for less wait time on data transfers. 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). Dedicating up to 5 Gbps to each USB port reduces performance bottlenecks, and effectively quadruples your total available to bandwidth to 20 Gbps. By employing four host controller chipsets, each port operates on a separate independent transmission channel.

When multiple devices are connected, traditional single bus USB 3.0 cards share your maximum bandwidth between all ports.

This independent port architecture improves USB 3.0 performance by transferring data on four individual channels to your computer, giving you faster file transfers. Add four USB 3.0 ports with four independent channels, LP/SATA power, and charging support to your PC through a PCI Express slot The PEXUSB3S44V 4-Port PCI Express USB 3.0 Card lets you add four, dedicated 5 Gbps USB 3.0 ports to your PCIe x4-enabled PC.

Pci express usb 3 card