The 2-Port ExpressCard USB 3.0 Card ECUSB3S22 adds two SuperSpeed USB 3.0 ports to an ExpressCard-compatible computer system. It uses a 34mm form factor that fits both 34mm and 54mm slots. The ports are arranged side by side to allow easy access. With support for UASP (USB Attached SCSI Protocol), this USB 3.0 controller is up to 70% faster than traditional USB 3.0 when used with a UASP-enabled enclosure. Note: A compatible operating system is required for UASP. With a more efficient protocol than traditional USB BOT (Bulk-Only Transport), UASP technology optimizes transfers by processing multiple commands simultaneously, significantly increasing transfer speeds and reducing wait times during data transfers. USB 3.0 supports data transfer rates of up to 5 Gbit/s (10 times faster than USB 2.0) and provides more power per port for faster and more powerful devices. Additionally, this ExpressCard adapter is backward compatible with USB 2.0/1.x, ensuring that all existing devices continue to work. It comes with a 2-year warranty and lifetime free technical support. Enhanced performance with UASP. UASP is supported on Windows 8, Server 2012, and Linux Kernel 2.6.3 or higher. In tests, UASP showed up to 70% higher read speeds and 40% higher write speeds compared to traditional USB 3.0 at peak performance. At the same peak, UASP also demonstrated an 80% reduction in processor resource requirements during testing. Test results were obtained using an Intel Ivy Bridge system, USB 3.0 add-in cards from StarTech.com, a UASP-enabled enclosure, and a SATA III Solid State Drive.