WTB: AC/DC Charger; ThinkPad Mini Dock Plus USB 3.0

[Economizer]

I recently purchased a W510 and am looking for the following:
* Docking station, preferably the USB 3.0 version with 3 video outputs (though I only own 2 external monitors)
* AC/DC Charger

[TuuS]

I have a 90w AC/DC adapter, but the recommended adapter for a W510 is 135w. It will probably work fine as long as you have a charged and working battery, but may not allow full performance.

[Economizer]

Yes, I'm aware it's a little under-spec'ed, but for this I want something small & lightweight for portability. What part # and price?