What is the difference between RJ45 with transformer and connector?

The RJ45 belt transformer is different from many types of connectors. The RJ45 belt transformer is suitable for desktop computers, laptops, routers, switches, network TV, set-top boxes, TV boxes, printers, hubs and other large/medium/small office decoration, home decoration and other high-speed Lan large database room and other places. In theory, it can be connected directly to RJ45 without transformer, and it can work normally. However, the transmission interval is very limited, and when received at a different level network port, there will be an impact. And external interference on the chip is also very large. When connected to the network transformer, it is primarily used for signal level coupling. Product characteristics: using high-quality flame retardant polycarbonate flame retardant properties of UL94-0 level. Material is the use of high-quality flame-retardant polycarbonate materials, good quality, assured use. The inspection of RJ45 with transformer must be carried out in the closed state of the incineration switch, otherwise the relevant electrical components will be burnt out due to the current self-induction or short-circuit. When removing the wire connector, to carefully observe the connector connection method; first of all, to loosen the locking spring or press the lock can be disassembled under the circumstances of the connector, must not be forced to pull hard. When loading and restoring, the adapter should be inserted exactly and locked in the opposite way.