The UH284 is ATEN's compact and highly functional 4 port USB 2.0 hub series for the desktop or the laptop. It features built-in Magnet Pads and can be placed almost anywhere. UH284 provides 4 additional USB 2.0 ports for existing USB Systems, including an easy access port which is ideal for connecting a flash drive. Provides 4 additional USB 2.0 ports to existing USB Systems, including a single easy access port for flash drives. Built in Magnet Pad for quick mount and easy movement. Fully compliant with the USB 2.0 specification. Four independent, fully functional, 480 Mbps ports. Supports transfer rates of 1.5/ 12/ 480 Mbps Backward compatible with USB 1.1. Plug-n-play. Per port over current protection. Super compact, lightweight design - great for mobile users. OS Compatibility:WIN98、WIN ME、WIN 2K、WIN 2003、WIN XP and Mac OS 8.6/9/10. Connection Upstream 1 x USB Mini Type B Female Downstream 4 x USB Type A Female Power 1 x DC Jack (Black) Output Voltage (Per Port) + 5V DC Environment Operation Temperature 0˚C~50˚C Storage Temperature -20˚C~60˚C Humidity 0 ~ 80% RH, NC Physical Properties Housing Plastic Weight 31 g Dimensions 8.2 x 3.2 x 1.4 cm