Buffalo has announced its USB 3.0 adapter ExpressCard, which must be capable of providing super high speed of 5.0 Gbps. But Buffalo does not provide clearer information if it is a 1.0 or 2.0 ExpressCard device If this is the first, you can only reach speeds of up to 2.5 Gbps. Only 2.0 ExpressCard allows you to enjoy data transfer speeds up to 5Gbps. It has 2 USB 3.0 ports are also compatible with USB 2.0 devices (but only in much smaller 480Mbps speed only).
This USB 3.0 ExpressCard Adapter allows your laptop old to have USB 3.0 ports, so you can connect external USB 3.0 devices to your laptop to enjoy up to 5.0 Gbps data transfer rate. The device is compatible with Windows 7, Vista 32 and 64-bit and XP.