Add 2 USB (Universal Serial Bus) 3.0 Ports to a Laptop through an Express Card Slot. The ECUSB3S22 2-Port Express Card USB (Universal Serial Bus) 3.0 Card adds 2 Super Speed USB (Universal Serial Bus) 3.0 ports to an Express Card-enabled computer system, using a 34mm form factor that will fit in both 34mm & 54mm slots, along with ports mounted side-by-side for easy access. Enhanced with UASP support (USB Attached SCSI Protocol), this USB (Universal Serial Bus) 3.0 controller performs up to 70% faster than conventional USB (Universal Serial Bus) 3.0 when paired with a UASP supported enclosure (Note: UASP requires a compatible operating system). Using a more efficient protocol than the traditional USB (Universal Serial Bus) 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. USB (Universal Serial Bus) 3.0 supports data transfer rates up to 5 Gbps (10x faster than USB (Universal Serial Bus) 2.0) & is able to provide more power per port, to help support faster & more powerful devices. Also, this Express Card adapter is backward compatible with USB (Universal Serial Bus) 2.0/1.x, so all of your existing devices will still work. UASP is supported in Windows 8, Server 2012 & Linux kernel 2.6.3 or later. In testing UASP performed with up to a 70% faster read / 40% faster write speed over traditional USB (Universal Serial Bus) 3.0 at peak performance. At the same peak in testing, UASP also showed up to an 80% reduction in required processor resources. Test results were obtained using an Intel Ivy Bridge system, Star Tech.com add-on USB (Universal Serial Bus) 3.0 cards, a UASP-enabled Star Tech.com enclosure, & a SATA III solid state drive.