User’s Manual
PSE-SW3B44DB
MSTRONIC CO., LTD.
9
*PD Port Wiring
Port 1 & 2 provide PoE inject function with maximum90W ability to power up the powered device
use the straight-through or cross-over Ethernet cable.
The PoE switch follows the IEEE802.3af Alternative A(MDI-X) + B mode connector assignment.
The following table shows pin assignment of alternative A and B for the Power Source Equipment.
Conductor
Alternative A
(MDI-X)
Alternative A
(MDI)
Alternative B
(All)
1
Negative Vport
Positive Vport
2
Negative Vport
Positive Vport
3
Positive Vport
Negative port
4
Positive Vport
5
Positive Vport
6
Positive Vport
NegativenVport
7
Negative Vport
8
Negative Vport
Be sure the twisted pair cable is bound with the standard RJ-45 pin. If the RJ-45 is bound with the
wrong pin number, PoE switch will not recognize the PD and won’t deliver DC power to PD. The
yellow PoE LED will light up when the cable is correctly connected. Refer to the
LED Indicator
section for descriptions of each LED indicator. If a port LED is off, go back and check for
connectivity problems between that port and the network device connected.