Dock requires included AC power to operate (does not power or charge attached laptop). COMPATIBLE WITH the following models: ThinkPad 10 2nd Gen Tablet, Tablet 2, Helix 1, Helix 2, Edge Series: E120, E125, E130, E135, E145, E220s, E320, E325, E330, E335, E420, E420s, E425, E430, E430c, E435, E440, E445, E450, E455, E460, E465,E470, E475, E520, E530, E530c, E535, E540, E545, E550, E550c, E555, E560, E565, E625, E570, E575, L Series: L330, L420, L421, L430, L440, L450, L460, L520, L530, L540, MiiX 700-12ISK, P40, P50, P50s, P70, S430, S230u, S440, T420, T420s, T430, T430s, T430u, T431s, T440, T440p, T440s, T450, T450p, T450s, T460, T460p, T460s, T520, T530, T560, W520, W530, W540, W541, W550s, Yoga S1, Yoga S3, Yoga 2nd Gen, Yoga S5, X1, X1 Yoga, X1 Carbon, X1 Carbon 2nd, X1 Carbon 4th, X120e, X121e, X130e, X131e, X140e, X220, X220 Tablet, X230, X230 Tablet, X230s, X240, X240s, X250, X260, 11e.