iGadgitz Black EVA Hard Case Cover for Various Asus 10.1 "Tablets (Transformer Pad / Infinity / Book / Memo Pad & Vivo Tab) (Personal Computers)
Use this Case for Transformer Prime TF201 with my dock. the transformer, folded with dock, fits in great, nothing wobbles, everything fits perfectly. USB sticks or other you can even super store. for me an absolute buy recommendation.