1. Onboard 7-way USB expansion port, compatible with USB2.0/1.1 transmission 2. Adopting industrial-grade HUB chip and MTT technology, 7-way USB can be used more stably and smoothly at the same time 3. Each USB port has ESD protection, and the device connection is protected from surge damage and data loss 4. Onboard overvoltage protection circuit can effectively prevent other high-voltage power supply from causing damage to the device 5. Onboard multiple protection circuits: overvoltage protection, overcurrent and short circuit protection, over-temperature protection, reverse current protection, undervoltage lockout, 8KVESD protection, filter protection, etc. Onboard multiple LED indicators, convenient for checking the working status of power supply and USB interface Industrial-grade metal shell, sturdy and , reserved screw holes for easy installation and fixation Interface standard: USB 2.0 Communication rate: theoretically up to 480Mbps USB HUB input: Operating voltage: 5V Interface type: USB-B type interface USB output: Operating voltage: 5V@lmax:1.2A Interface type: USB-A type interface External power supply: Supply voltage: DC5V Interface type: DC power supply terminal Compatible with:for OS (version 8.6 or above), for Linux ( version 2.4.20 or above), 11 / 10 / 8.1 / 8 / 7 / XP Color:Black Material:Metal Package Contents: 1 * USB HUB 1 * USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.