Which laptops work with the Dell WLD15?

It needs a laptop with Dell's wireless docking support built in. Check your model's spec sheet before buying; most newer Dell laptops rely on USB-C or Thunderbolt docks instead.

Does it need a cable to the laptop?

No. The laptop connects to the dock over a 60 GHz wireless link, so no docking cable runs to it. The dock itself still needs power and its own connections to monitors and peripherals.

Can I use it through a wall or from another room?

No. The 60 GHz link is short range and needs a clear line of sight, so the laptop should sit near the dock on the same desk.

What can I plug into it?

It provides USB 3.0 ports, display outputs and wired Ethernet, so you can attach peripherals, monitors and a network cable.

Is it better than a USB-C dock?

A USB-C or Thunderbolt dock works with far more laptops and offers more ports. The WLD15 makes sense only if your laptop supports wireless docking and you value the cable-free setup.