User’s Manual
PSE-SW5G25B4HM
MSTRONIC CO., LTD.
6
*Ethernet Port Wiring
The PoE switch family supports one RJ-45 uplink (port 5 with PoE PD) and four RJ-45 ports (port
1~4 with PoE PSE) with automatic MDI/MDI-X crossover, auto-sense for speed and duplex for
10Base-T, 100Base-TX or 1000Base-T connection. Automatic MDI/MDI-X crossover allows you
to connect to other devices (switches, hubs, or workstations etc.), without regard to using
straight-through or crossover cabling.
Port 1 to 4 provides Power over Ethernet function that delivers DC power through the data pairs C
& D (pin 4,5 and pin 7,8) to the PD.
Port 5 provides PD function that receives power from 4 pairs or 2 pairs PoE.
The following tables describe the wiring diagram of straight-through and crossover cabling. The
crossover cables simply cross-connect the transmit lines at each end to the receive lines at the
opposite end.
Straight-through Cabling
Pin 1
Pin 1
Pin 2
Pin 2
Pin 3
Pin 3
Pin 6
Pin 6
Pin 4
Pin 4
Pin 5
Pin 5
Pin 7
Pin 7
Pin 8
Pin 8
Cross-over Cabling
Pin 1
Pin 3
Pin 2
Pin 6
Pin 3
Pin 1
Pin 6
Pin 2
Pin 4
Pin 7
Pin 5
Pin 8
Pin 7
Pin 4
Pin 8
Pin 5
