The CyberData 4-port PoweredUSB 2.0 Hub with external power supply provides a simple and affordable way to add up to four PoweredUSB ports to your PC that are controlled by the PC''s Stand-by/Wake commands. With this PoweredUSB add-on hub, it is easy to connect devices that need more than the standard USB interface supplied 500mA of +5 volts. The 4-port hub includes plug-n-play installation, three +12V ports (1.5A each) and one +24V port (2.3A), multiple power supply options, peripheral power control by PC stand-by/wake commands, short-circuit and over-current protection, LED indicators to show power and USB 2.0 status, instruction manual, and two-year warranty. The 4-Port hub is also designed to mount into Dell''s Retail Integrator system.