GTB-USB2.0-4LR 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 °C Dimensions (Sender Unit / Receiver Unit): 5.75" W x 1.25" H x 2.5" D Shipping Weight: 2 lbs. Package Includes: (1) GefenToolBox USB 2.0 LR 4-Port Extender Sender Unit (1) GefenToolBox USB 2.0 LR 4-Port Extender Receiver Unit (1) 6 ft. USB Cable (A-B) (1) 5V DC Locking Power Supply (1) User Manual