PT-PIS4PB1S-E is a 4-port, industrial-scale PoE switch, which includes 1 SFP fiber data uplink Interface, DC input port, and 4 PoE ports, provides power and transfer signal for remote PDs over 4 pairs output at 10/100/1000Mbpsof data speed. SFP fiber slot supports 1000 Mbps optical module/optical fiber transceiver.