Now You Can Connect Several USB Devices to Communicate with Your Computer/Laptops Simultaneously! High Speed 4 Ports Expansion Hub (USB 1.1. Or USB 2.0.) Supports Fast Data Transfer Rate &…

High energy density, long life expantancy. Can be used:toy, clock, razor, electronic dictionary,toy, computer motherboard,home alarm system, window security sensor, igniter, LED flashlight,keyless-entry devices, garage door opener.