84mm

Ethernet switch, 4 TP RJ45 ports, 1 FO port, 100 Mbps full duplex in SC-D format, automatic detection of data transmission speed of 10 or 100 Mbps (RJ45), autocrossing function

Ethernet switch, four RJ45 ports, one ST fiber port

Narrow Ethernet switch, four RJ45 ports, one SFP port, with 10/100/1000 Mbps on all ports, automatic data transmission speed detection, autocrossing function, and QoS