4-PORT USB 2.0 HUB WITH POWER SWITCHESBlue LED to indicate power status for each portData transfer speeds up to 480 MbpsFour downstream ports support high-speed (480Mbps), full-speed (12Mbps), and low-speed (1.5Mbps)Supports up to 127 devices by daisy-chaining multiple hubsSome power-intense USB devices may require a AC-Powered USB hub