It’s a single‑cable dock that connects to your laptop via USB‑C/Thunderbolt and then provides multiple ports for monitors, peripherals, and power.
Officially branded as ThinkPad Universal USB‑C Dock, with product code 40AY0090 (LDA‑KP is the SKU / ordering code).
Up to 90–100 W laptop charging over USB‑C, so it can power many ThinkPads and other USB‑PD laptops from one cable.
Multiple ports typically include HDMI, DisplayPort, Ethernet, USB‑A, audio, and sometimes additional USB‑C, allowing you to run dual external displays plus keyboard, mouse, and network.
Office workstation: plug in one USB‑C cable to your ThinkPad and instantly get dual monitors, LAN, and USB peripherals.
Hot‑desking / flexible workspaces: easy plug‑and‑unplug between laptops (Windows and some Macs, though macOS multi‑monitor support can be limited on some models).
Video ports:
Display support: