The TKL (tenkeyless) label clues you in that, unlike a full-size keyboard, the G915 X Lightspeed has no numeric keypad.

It all depends on how you’ll be using it. Logitech was able to ship me the RS Wheel Hub and the RS Track Wheel attachment, ...

If you need more profiles, Logitech's G Hub app allows you to create and save them locally, but unless you set up a dedicated button to swap profiles, you’ll need the app to access them ...

which can be reprogrammed to do custom things in the Logitech G Hub. This idea is nice (once you get used to the extra space ...