Gefen GTB-USB2.0-4LR-BLK ToolBox USB Extender Changer Type: Extends Specifications: USB 2.0 Speed: 480 Mbps USB Connector (Sender Unit): Type B USB Connectors (Receiver Unit): (4) Type A Link Connectors (Sender Unit / Receiver Unit): RJ-45 Power Supply: 5V DC locking type (20W max) Operating Temperature: 0 - 40 Degree Dimensions (Sender Unit / Receiver Unit): 5.75 W x 1.25 H x 2.5 D Shipping Weight: 3 lbs.