Hi! Your Lenovo Legion 5 (15ARH05H) should support docking stations, as it has USB-C and USB-A ports that can connect to docks. The DELL WD15 K17A should work for connecting your USB devices, external monitor, and speakers, as long as the dock is compatible with the laptop’s ports and specifications.
Just make sure that the docking station you choose is compatible with the ports on your laptop and meets your needs for connectivity. Since charging via the dock is not a concern, you should be able to use it effectively for organizing your desk and managing your connections. If you have any specific requirements or need additional features, check the dock’s specifications to ensure it fits your needs.