D15329.08 SX20 Administrator Guide CE9.2, NOVEMBER 2017.   www.cisco.com — Copyright © 2017 Cisco Systems, Inc. All rights reserved. 
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Cisco TelePresence SX20 Quick Set  Administrator Guide
Power socket
Always use the provided Lite-On PA-1600-2A-LF power 
supply. 
Output from the power adapter to the codec: 5 A, 12 V
Input to the power adapter: 2 A, 100-240 V, 50-60 Hz 
Loudspeaker (line-out)
3.5 mm mini-jack, 3-pin connector. To be used with active 
speakers (built-in amplifier) only.
PC audio input (line-in)
3.5 mm mini-jack, 3-pin connector. Used when connecting 
to a PC or other external playback devices, such as a DVD 
player.
Microphone 1 and 2
3.5 mm mini-jack, 4-pin connector. 
We recommend using Cisco Table Microphone 20. If 
using another microphone, make sure it complies with the 
microphone connector specification, see the ► Connector 
pin-out schemes chapter.
2 × USB
For future use. Also for serial communication via RS-232 
adapter.
Network connector
Ethernet interface, 1 × 10 Mb / 100 Mb / 1 Gb Ethernet LAN 
interface (RJ45).
PC video input
DVI-I socket, digital/analog video input for PC presentations.
Monitor outputs (main and second)
HDMI socket, digital video and audio output for the main 
monitor; digital video output for the second monitor.
Camera input, combined HDMI and camera 
control
The custom camera socket consists of an HDMI connector 
for digital video input from the camera, and a connector for  
camera control and power.
The VISCA™
*
 protocol for camera control (pan, tilt, zoom) is 
supported. Pin no. 20 provides 12 V DC / 1.5 A to the main 
camera.
Kensington lock
The Kensington lock may be used to prevent the codec 
from being moved or to prevent theft.
Rear panel
The connectors used 
in a basic setup are 
highlighted in blue.
* 
VISCA™ is a trademark of Sony Corporation
Microphone 1 (3.5 mm mini-jack)
2 × USB (for future use)
Camera input (custom)
PC video input (DVI-I input)
Main monitor (HDMI 1 output)
Second monitor (HDMI 2 output)
Power Kensington lock
Microphone 2 (3.5 mm mini-jack)
Loudspeaker (3.5 mm mini-jack)
PC audio input (3.5 mm mini-jack)
Network (RJ45)