Lenovo Dock_repl Kensington K33480NA - 4Z91K18761

Lenovo 4Z91K18761 USB-C 10Gbps Triple Video Driverless Docking Station

Overview

The Lenovo 4Z91K18761 (also listed as SD4839P) is a desktop USB-C docking station purpose-built for knowledge workers and IT deployments where a clean, driver-free setup is non-negotiable. It delivers 10 Gbps USB-C data throughput — fast enough to handle simultaneous SSD transfers, video output, and network traffic without a bottleneck — while pushing up to three independent displays at once, including 4K and Full HD outputs. The 85W Power Delivery pass-through charges most USB-C business laptops at full rate, eliminating the need for a separate power brick at the desk. Because it operates completely driverless, IT teams can provision workstations without managing dock firmware or driver packages — plug in, and all three monitors, Gigabit Ethernet, and data ports are live immediately under Windows 10.

Compatibility

Designed for USB-C hosts running Windows 10. The 4Z91K18761 is an alternate SKU for the Lenovo ThinkPad and ThinkCentre ecosystem — specifically targeted at systems supporting USB-C with DisplayPort Alt Mode for multi-monitor output. Verify your host laptop or desktop exposes a USB-C port with DP Alt Mode and sufficient power negotiation to take advantage of the 85W PD. Gigabit Ethernet is handled natively over USB without additional NIC drivers, making this compatible with standard managed and unmanaged switch infrastructure on enterprise floors. The driverless design means Windows 10 recognizes all connected peripherals at the OS level without third-party software.

Installation Notes

Desktop form factor — designed for flat-surface placement, not rack or wall mounting. Connect the dock to the host via a single USB-C cable; the same connection carries video, data, and power simultaneously. Confirm the host USB-C port supports DisplayPort Alt Mode before deploying across a fleet — USB-C ports that are data-only or charge-only will not drive the three display outputs. For triple-monitor configs, all three display ports on the dock must be active simultaneously, so verify the host GPU supports the required display stream count.