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. Note: Power adapter (DC5V, 26A) not included and is optional, a separate purchase is required.