The TetherBoost Pro USB 3.0 Core Controller provides consistent power to maintain a stable connection for tethered image transfer when using a DSLR or medium-format digital back system connected to a computer via USB 3.0 cables - now at distances up to 65 feet. This streamlined solution alleviates current frustrations among photographers experiencing dropped signals when shooting with USB 3.0 cameras and computers. What’s included: One (1) TetherBoost Pro USB 3.0 Core Controller One (1) JerkStopper Extension Lock One (1) USB DC Cable 3.25' (1m) One (1) TetherBoost AC Power Adapter Product Specifications: 13.5? (.35m) in length Blue LED power indicator Backwards compatible to USB 2.0 and USB 1.1 Transfer rate of up to 5Gbps 90-day warranty from manufacturer defects