
Figure 13: Power Connector Pinouts
Description
Name
Pin Number
DC power return (GND–)
DC-
1
Reserved for future use
—
2
DC power input:
• 12V for IG21
• 12V or 24V for IG21R and
IG31R
DC+
3
Reserved for future use
—
4
Cisco IG21 IoT Gateways, Cisco IG21R Rugged IoT Gateways, and Cisco IG31R Rugged IoT Gateways Hardware Installation Guide
17
Product Overview
Connecting to Power