Samsung series 5+ 550 User Manual page 178

Support resolution (16:9 only)
N
Resolution Frequency (Hz)
1280 x 720p 50 / 60 Hz
1920 x 1080i 50 / 60 Hz.
1920 x 1080p 24 / 30 / 50 / 60 Hz
Resolution supported for HDMI PC mode
◀ ▶
The optimal resolution for the HDMI PC mode is 1920 x 1080. If the input
resolution is not 1920 x 1080, the TV may not display images properly in 3D
display or full screen mode.
English