Bought this thinking it would fit my work laptop - it doesn't. It's specific to these models Models: L440, L450, L460, L470, L540, L560, L570, P50s, P51S, T440, T440p, T440s, T450, T450s, T460, T460p, T460s, T470, T470P, T470S, T540p, T550, T560, T570, W550s, X240, X250, X260, X270. COMPATIBLE with select 65w and 90w Lenovo laptops - NOT recommended for laptops with 170W AC adapters. See the link for more info on the dock I just want my money back for it $36, price is firm