Features:
Compliant with USB 3.0 specification.
Compatible with USB 2.0 & 1.1 specification.
Compliant with ExpressCard Specification 1.0.
Compliant with ExpressCard/54mm standard.
Compliant with standard 54mm ExpressCard slot.
Support Windows XP / Vista / 7 / 8 / Server 2008.

Power supply:
900mAh(enough for U-disk,mouse and other devices,U can use the cable to supply power for Ur large current demand devices)
Dimension:73x53x5mm/2.9x2.1x0.2"

Package Included:
1 X 2 Port Hidden USB 3.0 ExpressCard 54mm Adapter.
1 X USB DC Cable
A super fast and high-capacity data transfer solution.
Compact hidden design to save space.
Stable and reliable ASM Chipset Renesas uPD720202.
Date transfer rate up to 5.0Gbps / 625MB/s.
Plug & play and hot swapping capability.