Chapter 3
Connecting computers and other devices
36
Using recommended cables
SMART recommends the following varieties of cable:
Cable type
Maximum length
Recommendation
HDMI
23' (7 m)
2
Use only certified premium high-speed HDMI cables that
have been tested to support the performance standard
you require.
VGA
23' (7 m)
Use VGA cables with all pins in their connectors fully
populated and wired.
Stereo 3.5 mm
20' (6 m)
[N/A]
USB 2.0
16' (5 m)
Use a USB extender if the distance between the
computer and the display is greater than 16' (5 m). For
more information, see
USB 2.0 cables support Hi-Speed (480 Mbps), whether
connected to a USB 2.0 or USB 3.0 receptacle. For
SuperSpeed (5 Gbps), connect a USB 3.0 cable to a USB
3.0 receptacle.
USB 3.0
9' (3 m)
SMART supports only installations that use directly
connected video and USB cables, AC-powered
extenders, or USB extenders purchased from SMART.
You might be able to use higher-grade cables that are
longer than specified. If you have problems with such a
cable or an extender of any type, test the connection with
a shorter cable before contacting SMART Support.
USB Type-C
6' (2 m)
To use a USB Type-C cable for video, you need:
l
A cable that supports USB 3.1 (Gen 1 or Gen 2)
l
A computer that supports Display Port Alternate
Mode
Passive USB Type-C cables are sufficient for 60 W
charging.
You might be able to use higher-grade cables that are
longer than specified. If you have problems with such a
cable or an extender of any type, test the connection with
a shorter cable before contacting SMART Support.
Using cables that exceed these maximum lengths may produce unexpected results, degraded picture
quality or degraded USB connectivity.
2
The performance of cables longer than 23' (7 m) is highly dependent on the cable’s quality.
