Lenovo ThinkPad Mini Dock Series 3 Docking Sation with USB 3.0 - 90W - 433715 1x VGA, 1x DVI-D, 1x DisplayPort, 1x USB 3.0, 5x USB 2.0, Gigabit Ethernet, Security Key, and Lock Cable Lock Slot. Maximum supported monitors: 2 (depending on system's graphics capabilities). Includes ThinkPad 90W AC adapter. COMPATIBLE with select 65w and 90w Lenovo laptops - NOT recommended for laptops with 170W AC adapters. Also supports recent models, such as the following series: T420, T430, T510, T520 (dual core), and T530 (dual core).