Interface, Power connection, Cable connection – OT Systems ET8122M-S-DR User Manual
Page 7: Et8122m-s-dr, Ethernet port rj-45 pin assignment
ET8122M-S-DR
Industrial Managed 8-port 10/100Base-TX + 2-port 10/100/1000Base-T/SFP Combo Ethernet Switch
V1.0
7
Interface
Ethernet Port RJ-45 Pin Assignment
Power Connection
Pin
Description
V1 -
V1 +
V2 -
V2 +
Power Input
GND
+12~48V
(DC)
GND
+12~48V
(DC)
Cable Connection
Signal Type
Cable Type
Connector
Ethernet
Cat. 5 or above
RJ45
Optical
SM/MM Optical fiber cable (depends on SFP)
LC
Power supply 1
Power cable
6-pin Terminal Block（Pin 1/2）
Power supply 2
Power cable
6-pin Terminal Block（Pin 5/6）
ALM
UTP
6-pin Terminal Block（Pin 3/4）
10/100Base-T Pins
1000Base-T Pins
Pin
MDI
MDIX
MDI
MDIX
1
TD+
RD+
TP0+
TP1+
2
TD-
RD-
TP0-
TP1-
3
RD+
TD+
TP1+
TP0+
4
N/A
N/A
TP2+
TP3+
5
N/A
N/A
TP2-
TP3-
6
RD-
TD-
TP1-
TP0-
7
N/A
N/A
TP3+
TP2+
8
N/A
N/A
TP3-
TP2-