A DVI-to-VGA monitor adapter is not supported on the Dual-Link DVI-D monitor connector. DVI-to-VGA monitor adapters are supported on DVI-I only, not DVI-D ports.
ThinkPad and DVI Pass-Through using ThinkPad Advanced Mini Dock (2504) and ThinkPad Advanced Dock (2503)
Selected ThinkPad models offer DVI Pass-Through capability.
The first monitor must be analog and attaches to the VGA port on the dock.
The second monitor must be digital and attaches to the DVI-D port on the dock.
The ThinkPad display is disabled (screen is blank).
The following ThinkPads are supported by the ThinkPad Advanced Mini Dock (2504) and ThinkPad Advanced Dock (2503). The table lists which ThinkPad systems support DVI Pass-through.
ThinkPad
Integrated Graphics Models
Discrete Graphics Models
R60
No
Yes
R61, R61i 14-inch
Yes
Yes
R61, R61i 15-inch
No
Yes
R400
Yes
Yes
R500
No
Yes
T60
Yes
Yes
T60p
Yes
Yes
T61
Yes
Yes
T61p
Integrated Graphic Models are not offered
Yes
T400
Yes
Yes
T500
Yes
Yes
W500
Integrated Graphics Models are not offered
Yes
Z60t
No
No
Z60m, Z61m
No
Yes
Z61t
Selected models
No
Notes:
R60e and R61e not compatible to ThinkPad Advanced Mini Dock (2504) or ThinkPad Advanced Dock (2503).
Integrated are Intel graphic models and Discrete are ATI or NVIDIA graphics models.
Graphics can be determined by Settings within Display Properties.
A DVI-to-VGA monitor adapter is not supported on the ThinkPad Dock DVI-D port.
DVI-to-VGA monitor adapters are supported on DVI-I ports, not DVI-D ports.
Maximum supported monitor resolutions, analog (VGA) and digital (DVI-D), are determined by the ThinkPad system.
Maxium resolutions can be determined by Settings within Display Properties.
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