Dell S1909WN Monitor - Manual (Page 6)

Resolution Specifications
Supported Video Modes
Horizontal scan range 30 kHz to 83 kHz (automatic)
Vertical scan range 56 Hz to 75 Hz (automatic)
Optimal preset resolution 1366 x 768 at 60 Hz
Highest preset resolution 1366 x 768 at 75 Hz
Video display capabilities
(Component playback)
480i/480p/576i/576p/720p/1080i/1080p