Now Gigabit Ethernet has been popularized in a large area, and Gigabit Ethernet switches are also widely used in scenarios such as enterprise networks and optical access networks. Gigabit Ethernet has two types of ports, namely RJ45 and SFP ports. These two ports can support the highest transmission rate of Gigabit, and can also be backward compatible with the transmission rate of 10/100M.

The RJ45 port is a built-in electrical port of a Gigabit Ethernet switch, and it is mainly connected by Category 5, Category 5e, Category 6, and Category 6e twisted-pair cables. The SFP port is a built-in optical port of a Gigabit Ethernet switch, so it cannot be directly connected with a twisted pair or a jumper. It needs to be connected to an optical module first, and then it can be transmitted with an optical fiber patch cord. Next, ETU-LINK will introduce the interconnection method between Gigabit RJ45 port and SFP port.

To connect Gigabit RJ45 port and SFP port, you can use ETU-Link Gigabit electrical port module, specification model: ES-T1-R, it is actually an interface converter, so it is also called optical port to electrical port module. Insert the Gigabit electrical port module into the SFP optical port, and then connect the Category 6 network cable to the Gigabit RJ45 port.

Gigabit electrical port modules are mainly used in the interconnection between short-distance Gigabit RJ45 ports and SFP ports. Gigabit electrical ports are divided into pure 1000M electrical ports (ES-T1-R) and 10/100/1000M adaptive electrical port modules ( ES-T2-R), the longest transmission distance can reach 100 meters using Category 6 twisted pair. In addition to the Gigabit electrical port module, the electrical port module also has a 10 Gigabit electrical port module, but the twisted pair connected to the 10 Gigabit electrical port needs to be connected with a Category 6 or Category 7 network cable.

The above is the method of connecting the Gigabit RJ45 electrical port and the SFP optical port introduced by ETU-LINK. From the perspective of the cost of short-distance transmission, if the switch with the SFP optical port uses an optical module with a patch cord. The cost of transmission will increase, and the use of electrical port modules with six types of twisted pair cables is a low-cost transmission solution.