Features: Long service life: Switching can reach more than 80K times. No power supply: There is not interferences to the networking signal. Small and delicate: Easy to carry. Plugs and play. The technology is mature. Atmospheric elegances. Physical isolation: Real physical isolation. Intranet and extranet handovers. They will not disturb each other. High safety factors. It can freely control the networking cable on or off, easy to installs. Using completely nontoxic shell. Specifications: Materials: Plastic Size: 53x35mm/2.09x1.38inch Package Includes: 1PC RJ45 networking switches note: Please allow 0-1cm error due to manual measurement. make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color the item. Thank you!