Simplecom CH241 Hi-Speed 4 Port Ultra Compact USB 2.0 Hub CH241 4-Port USB 2.0 Hub is a simple and fast way to add four USB-A ports to any desktop or laptop computer, expanding connectivity for keyboards, mice, printer and other peripherals. Hi-speed USB 2.0 ports provide data transfer rate up to 480Mbps for external storage. Designed with mini size, ultra slim and compact, easily slips into your pocket or computer bag, for anywhere you need easy, handy access to your USB devices. Features Four Hi-Speed USB 2.0 Type-A ports for additional peripherals Supports up to 480Mbps data transfer rate Compact size ideal for both desktop and notebook computers USB Bus powered, hot-swappable Cable reinforcement, sturdy exterior ensure durability Plug and play, no driver software required Windows, Mac and Linux compatible Specifications USB Revision_ USB 2.0 (Backwards Compatible With USB 1.1) Data Transfer Rate_ up to 480 Mbps Max Output_ 2.5W (5V/0.5A) across all 4 ports Cable Length_ 25cm Dimension_ 9.5 x 3.0 x 1.0 (cm) Operation Temperature_ 0 - 40°C System Requirements_ Windows XP and above, MacOS 9.1 and above, Linux Important Note This item is designed for data transfer, not for charging. Don’t plug this Hub to any USB charger For stable connection, the devices connected to the 4 Port Hub must not exceed a combined current of 5V 0.5A, external USB hard drive may need external power source.