Overview and FeaturesThe ThinkPad Thunderbolt 3 WorkStation Dock (40AN) - 230W is a pioneering docking solution powered by Intel Thunderbolt™ technology and is designed exclusively for ThinkPad Mobile Workstations, delivering up to 230W power to charge both notebook and a full range of productivity and connectivity peripherals. Capable of driving up to three 4k displays the ThinkPad Thunderbolt 3 Workstation Dock streamlines the workspace of power users with a single cable and a low-profile design.The ThinkPad Thunderbolt 3 WorkStation Dock (40AN) - 170W is a pioneering docking solution powered by Intel Thunderbolt™ technology and is designed exclusively for ThinkPad Mobile Workstations, with dual power adapter design,delivering up to 170W power to charge Mobile WorkStation and a full range of productivity and connectivity peripherals. Capable of driving up to three 4k displays the ThinkPad Thunderbolt 3 Workstation Dock streamlines the workspace of power users with a single cable and a low-profile design.Features:Up to date, high-speed Thunderbolt 3 technology, providing 40Gbps data speedInnovative cable connector delivers data, display, and power up to 170-watt or 230-watt to charge high-performance ThinkPad Mobile WorkstationsEnhanced performance with professional video support for maximum three 4k displays5K UHD video experience through DisplayPort ports or Thunderbolt port5 x USB3.1 A ports delivering up to 10Gps of high-speed USB data