Overview: ExpressCard is an interface to allow peripheral devices to be connected to a computer, usually a laptop computer. This USB Express Card aims at providing high-performance and modular expansion to both desktop and laptop by a lower cost and compact design. And this serial port express card for notebook laptop is compliant with standard 54mm port. This laptop 3 port USB express card can support hot swap function! And this laptop 3 port USB 54mm express card can support USB3.0, USB 2.0 and USB 1.1.Do not miss this express card! Features: Support 3 x USB ports, transfer speed up to 5Gbps Compatible with PCI-Express and 1.0a Complies with PCI express base specification revision 2.0 Complies with universal serial bus 3.0 specification revision 1.0. Support the following data transfer rate: USB 2.0 mode up to 480 Mbps USB 3.0 mode up to 5 Gbps Faster than High-Speed USB 2.0 Low profile supported 5V 900mA power output ( if power low 900mA, can use the card without USB cable ) Support system : Windows 2000/XP/2003/Vista/Win 7 of 32 / 64 bit server Package Includes 1 x 54mm express card to 3 ports USB 3.0 Notebook Adapter 1 x CD Driver