T400 - switching graphics and many wonder

I just got T400 for my school work. I understand there is also a feature to switch between integrated and discrete GPUS.

I have a few question now...

In Device Manager are we suppose to see two installed GPU, or just one active?

What are the conditions for Manager power switch between two GPUS?

How can we explicitly make the switch without according to conditions set by the power manager? I have read the help file, I had no option to the power gauge to move the graphics.

It is also remarkable, although there is a manual for this laptop, it's not detailed enough some of the function which is pretty new to me. for example, it took me a while before I know how to configure the fingerprint for log reader. The use of the scanner is not covered in the manual.

And I can't use the function under thinkvantage to get expert help. There continue to be "Internet Explorer cannot display the page" firefox/opera/safari not so.

I thought about it.

My school uninstalled, the function by accident.

For those who cannot always make the switch, just look at the taskbar, there should be a gauge of plug or power. Left up until it clicks, it will give you a menu with "Switchable Graphics", do your stunts there

The function is not found anywhere in power management. It's a little weird, like the help file on the hood of management this function. The team of documation fails!

Tags: ThinkPad Notebooks

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