This store only sells genuine products with packaging instructions in Chinese. For English or other language instruction manuals, please contact our staff. The TL-SF1005 industrial grade is a full Gigabit unmanaged industrial network switch product, providing 5 10/100/1000M adaptive RJ45 ports, all of which support line-speed forwarding and MDI/MDIX automatic flipping functions, plug and play. Note that this product is not equipped with a power supply when it leaves the factory. If you need a power supply, please purchase it separately. Port performance provides 5 10/100/1000M adaptive RJ45 ports, all of which can achieve line-speed forwarding. Each port supports MDI/MDIX automatic flipping and duplex/rate auto-negotiation. Supports IEEE 802.3x full-duplex flow control and Backpressure half-duplex flow control. Easy to use, plug and play, no management required, dynamic LED indicators can easily indicate operating status and troubleshooting.