Features: Long service life: Switching can reach more than 80,000 times. No power supply required: Does not interfere with networking signals. Compact and lightweight: Easy to carry, plug and play. Mature technology with an elegant design. Physical isolation: Provides true physical separation between intranet and extranet, preventing interference and ensuring high safety. Allows easy control of network cable connection on or off, simple to install. Made with completely nontoxic housing material. Specifications: Material: Plastic Size: 53 x 35 mm (2.09 x 1.38 inches) Package Includes: 1 x RJ45 Network Switch Note: Please allow 0–1 cm error due to manual measurement. Ensure you are comfortable with this before purchasing. Due to differences in monitor displays, the image may not reflect the actual color of the item. Thank you!