Enter USB 2.0 4 port USB Hub (452003)

full complaint with the universal series bus.
specification version 1.1/ 2.0, full speed up to 480 MBPS.
single chip integrated USB hub controller with embedded proprietary processor.
support for bus powered USB hub controller with embedded propriately processor.
support for bus-powered downstream pots.
built -in 3.3 voltage regulator allow single+ 5v operating voltage, resulting in reduced overall system cost.
provide up to 500 ma current to each port which is sufficient for drverse devices, hot plug and play.
design with super streamline and mini and mini size with colour LED show (particular models).