2504 Advanced Mini-dock and Thinkpad T61

I have a 2504 Advanced mini-dock in the office and it works fine.
I've bought another 2504 FRU 41W6563 for home. It only seems to part work though. When you put the machine in the dock the power supply is detected from the mini-dock, but nothing else seems to work, especially the USB ports, even if I shutdown Windows, and reboot.
With the switch in the unlocked position, there is no green light, when you switch it to locked, the red light comes on.
I'm confused if this is the right mini-dock - Can anyone help or suggest anything?
My Thinkpad is a T61, 7659-A71

Hi
I don't have a solution, but a similar problem. I wish there was some real documentation for this piece of hardware.
I am using the advanced mini-dock with my new T61 (14.1" with the integrated graphics card) and it's all hit-and-miss.
Undocking the laptop seems to provide no problems, but getting it to dock really is hit and miss. More often than not it doesn't seem to work.
The display setting won't switch, and I can't get to the display manager or if I can it shows only the default setting as the choice. Most of the time the display on my T61 is blank too.
I have it set up so that it's supposed to switch to the external DVI monitor at 1280x1024. When it works it work beautifully, but the fact that it doesn't makes me use the docking station less often
that I would
Are there some do's and don'ts or a FAQ regaring the use of the docking station? The only instructions that came with it was one sheet of drawings. I looked on the lenovo site for more instructions but didn't find any.
What is the purpose of the power switch on the dock? I can't tell when it's on or off (or if it even does something). Ie when the T61 isn't docked, I don't see anything if I push the power button on the dock.
I really like the idea of the docking station, I just wish it would work better for me.
Does the system have to be up and running if it's docked? Do I have to be logged in? Can I have a wireless USB mouse attached to the T61 when I dock it?
Is there a problem with the display manager software that make the automatic mode switching problematic?
EB
PS: New one, the cabled USB mouse isn't working when attached to the docking station, but works when directly attached to the T61. This has worked in the past. The external keyboard is working fine though ... odd

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