IBM Dock 74p6734 for Thinkpad X, T, R and A Series

This IBM docking station is better for 2 reasons:  

1. it uses the same AC adapter that come with your laptop, NOTE there are a number of docking stations that use its own AC adapter that is different connector than the one came with your PC, I found it is very inconvenient to have 2 different kind of AC adapter to use, just reuse the ac adapter you have with this docking station.

2. it has no keys, very clean and space saving. The bad thing about the one with keys is that, you could NOT take the kays out without lock the stations. Very bad, since you don't really need a key if use your laptop at home, and you want to take the laptop on and go without any extra steps (like unlock!!)

I prefer this one though I also have the one with keys.

IBM Part Number:  74P6734

Use your IBM / Lenovo ThinkPad notebook like a desktop computer when you connect it to a genuine IBM Mini-Dock docking station. This docking station is compatible with most newer ThinkPad laptops utilizing USB 2.0 and is backward compatible with older USB 1.1 models (see below).

IBM ThinkPad laptop models:

A20, A21, A22 A30, A31, R30, R31, R32, R40, R50, R51, R52, T20, T21, T22,

T23, T30, T40/p, T41/p, T42/p, T43/p, X20, X21, X22, X23, X24, X30, X31.

CONDITION: Used, good condition.