Description
Power on
Keep working with a power pass through that powers your device while it charges.[2]
Built for enterprise
Support network manageability of your device and the docking station with integrated Wake on LAN[3], PXE boot, and 802.1x authentication on the docking station, and get physical security from a security lock slot.[4]
Park it or pack it
Place the compact dock on your desk with minimal impact to your workspace, or take it to go with your tablet.
Rest easy
Get the reassurance of a one-year limited warranty.
Delivering sharp, high-quality A3 output with the speed, versatility and footprint of an A4 device, the B840 offers low running costs and low total cost of ownership, bringing versatile A3 mono printing to small and medium workgroups. 
At 6% thinner than its predecessor, the ThinkPad X1 Carbon Gen 7 is only 14.9mm thin—or just a hair more than a half inch—and it weighs only 2.4lb/1.08kg. This lightweight package reinvents portability and untethers you from the office. With a battery life of up to 18.3 hours, and Rapid Charge when you do need more juice, you can go wherever the road—or the sky—takes you*. 
Boost your PC’s power on the world’s most powerful and first modular dock with a future-ready design.