Attaching an external monitor
Display output on the LCD, or both on the LCD and external
monitor (LCD or LCD+External Display).
Display output only on the external monitor (External Display).
Note: If you are using an old external monitor, the resolution and
color depth might be limited.
Resolution Supported Color Depth
640x480 (VGA) 16, 256, 65,536, and 16,777,216
800x600 (SVGA) 256, 65,536, and 16,777,216
Resolution Supported Color
Depth Frame Rate
640x480 (VGA)
16
60 Hz, 75 Hz, or 85
Hz
256
65,536
16,777,216
800x600 (SVGA)
256 60 Hz, 75 Hz, or 85
Hz
65,536
16,777,216
1024x768 (XGA) 256 60 Hz, 70 Hz, 75Hz
65,536
66 ThinkPad 240 User's Reference