Usage Tips:USB TO ExpressCard adapter. Easy to carry ExpressCard adapter can be used on desktop or laptop computers. ExpressCard supports 34MM or 54MM without the need for a driver, and can be installed Supports USB specification design for 5V ExpressCard PC cards, such as USB 2.0 card, EV-DO (3G), HSPDA (3.5G) broadband card, -232 card, etc Express Card Reader ExpressCard TV. Compliant with USB 2.0 specifications and backward compatible with USB 1.1. Hot swappable technology allows for the insertion or removal of EXPRESS devices without shutting down the computer. Supports ExpressCards with 34 or 54 pins. ExpressCard can be used without an external power supply. DC 5V internal positive and external negative socket, if the device requires additional power supply, it can be purchased. Equipped with LED lights for signal display (connected to computer) and (ExpressCard device connected). No driver program is required for installation. Remarks: Does not support PCI Express specification design for 3.3V ExpressCards such as 1394a/b cards, E-SATA Express Card. Color: Black Material: plastic Package Contents: 1 pc * USB TO ExpressCard Adapter Only the above package content, other products are not included. Note: Light reflection 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.