Main specifications: * Rotatable structure for laptops with 4 USB ports * All 4 USB ports are able to work at the same time * Over-current protection for each port * Compliant with USB 2.0, high data transfer speed.[...]

Main features as below: --Rotating structure (both horizontally and vertically), user-friendly for operation; --Excellent sound quality; --8 FM channels can be stored; --Charge power function (for Mp3/Mp4 players etc. via USB interface); --Full frequency range: 88.0MHz~108.0MHz; --Certified by CE / R&TTE.[...]

Main specifications: * Designed for laptops with 4 USB ports/aluminum cover * Built-in rotatabe & retractable USB plug to connect PC easily * All 4 USB ports are able to work at the same time * Over-current protection for each port * Compliant with USB 2.0, high data transfer speed[...]

Main specifications: * Designed for laptops with Aluminum cover * Built-in rotating & retractable USB plug to connect PC easily * Support SD/SDHC/MMC/TF/CF/XD/MS/M2 series cards (no card adapter needed) * Read all types of flash cards from one side * Support USB 2.0, high data transfer speed[...]