Onboard 7-way USB expansion port, compatible with USB 2.0/1.1 transmissionUsing industrial- HUB chip, using MTT technology, 7-way USB is more stable and to use at the same timeEach USB port is ESD to device connections from power surge damage and data lossThe on-board overvoltage protection circuit can effectively prevent the equipment from being damaged due to the access of other high-voltage power sources.Multiple protection circuits onboard: over voltage protection, over current and short circuit protection, over temperature protection, reverse current protection, under voltage lockout, 8KV ESD protection, filter protection, etc.Product Features.Onboard multiple LED indicators, easy to check the working status of the power supply and USB interfaceIndustrial- metal shell, sturdy and durable, reserved screw holes for easy installation and fixation.size: 138 x 51MMMaterial: Metalcolour: blackPackage Contents:1 x 7-Port Hub1 x Data CableOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.