Lenovo ThinkCentre M75n User Manual page 20

1. DC-in power connector
2. USB-C connector (USB 3.1
Gen 1)
3. Digital input and Digital output
(DI/DO) connectors
Digital Input and Digital Output Pin definition mapping table
D-OUT pin number D-OUT pin definition
1
COM
2 GND
3 Digital Output-1
4 Digital Output-2
5
Digital Output-3
6 Digital Output-4
14
ThinkCentre M75n User Guide
Connect to dc power for power supply through the DC-in connector
Note: You can use the DC-in cable
environment where no dc power is available. Connect one end of the DC-in cable
a
to a 135W ac power adapter or greater. and connect the other end to the DC-in
power connector on the I/O box. You can purchase the ac power adapter
separately from Lenovo.
• Connect to the computer through the USB-C adapter
• Transfer data at USB 3.1 speed, up to 5 Gbps.
• Supply power to the computer.
Note: When the computer is not connected to ac power and the I/O box is
connected to dc power, the I/O box supplies power to the computer through
the USB-C connector. In this case, the output voltage and current are 20 V and
3 A.
Connect to proximity sensors or other devices that use DI/DO connectors through
d
the DI/DO adapters .
D-IN pin number
1
2
3
4
5
6
a
when you are testing the I/O box in an
c
.
D-IN pin definition
COM
GND
Digital Input-1
Digital Input-2
Digital Input-3
Digital Input-4
b
.