Features: The card is suitable for the interface ExpressCard 54 mm. With this USB 3.0 ExpressCard you can provide two additional USB 3.0 ports for your notebook easily and comfortably. Compatible with ExpressCard 54mm Plag and Play The card is suitable for the interface ExpressCard 54 mm. With this USB 3.0 ExpressCard you can provide two additional USB 3.0 ports for your notebook easily and comfortably. Date transfer rate up to 5.0Gbps / 625MB/s.One end is 3 port USB 3.0 type A female connectors and another end is standard 54mm ExpressCard. Please note: External power is required for some high current consumption devices and 2 or 3 devices at the same time. The card is suitable for the interface ExpressCard 54 mm. With this USB 3.0 ExpressCard you can provide two additional USB 3.0 ports for your notebook easily and comfortably. Compatible with ExpressCard 54mm Plag and Play The card is suitable for the interface ExpressCard 54 mm. With this USB 3.0 ExpressCard you can provide two additional USB 3.0 ports for your notebook easily and comfortably. Feature: A super fast and high-capacity data transfer solution. 3 Ports for access to more USB devices. Compact hidden design to save space. Stable and reliable Fresco Logic Chipset FL1100. Compliant with USB 3.0 specification. Date transfer rate up to 5.0Gbps / 625MB/s. 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. One end is 3 port USB 3.0 type A female connectors and another end is standard 54mm ExpressCard. Plug & play and hot swapping capability. Support Windows 2000/XP/2003/Vista/WIN7/WIN8/WIN10 Please note: External power is required for some high current consumption devices and 2 or 3 devices at the same time. Package included: 1 x 3 Port Hidden USB 3.0 ExpressCard 54mm Adapter. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.