Lenovo 4337 Mini Dock Series 3 For T410, T420, T410s,T510 T520 With Key
Buy this if you want the best deal on a Thinkpad dock and already own an OEM laptop charger.
USB 2.0 SDHC CARD READER MMS MEMORY STICK PRO DUO M2 SD
Exactly as described
I picked this up because they stopped selling them at dollar stores. It does exactly as described.