Chapter 4
Connecting computers and other devices
smarttech.com/kb/171415
51
Setting a connected computer’s resolution and refresh rate
This table presents the recommend resolutions and refresh rates for the display’s inputs:
Input source
Resolution
Refresh rate
HDMI 1
3840
×
2160
60
Hz
HDMI 2
3840
×
2160
60
Hz
HDMI 3
3840
×
2160
60
Hz
VGA
1920
×
1080
60
Hz
USB Type-C
3840
×
2160
60
Hz
If possible, set connected computers to these resolutions and refresh rates. See the computers’ operating
system documentation for instructions.
Using recommended cables
SMART recommends the following varieties of cable:
Cable type
Maximum length
Recommendation
HDMI
23' (7 m)
3
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.
3
The performance of cables longer than 23' (7 m) is highly dependent on the cable’s quality.
