Laptop usb hub gets access to the usb port you need with the extreme 4 port powered usb hub,hub is mac and windows compatible. Key Specifications Ports 2-4 Interface Type USB 2.0 Certification ROHS CE FCC Brand Name HSD /OEM Place of Origin Guangdong, China (Mainland) Interface USB 2.0, compatible with USB 1.1 HUB quantity 4 ports Dimension ~7.6(L) x 3.8(W) x 1.6(H)cm Transfer rate up to 480Mbps Current 500mA Casing Material plastic Compatible with Windows ME, 2000, XP, and Vista LOGO printing Support OEM package Support