I am enjoying using my new SM 1 Slim Mechanical Bluetooth Keyboard with my M4 MacBook Pro, resting it directly on top of the Mac's keyboard, as I do not like the Mac's track pad, so the SM1 keyboard fits nicely on top of the Mac. That position location was not my initial desire for keyboard placement, which brings me to my one notable comment. It would be better if the keyboard's charging cable / power cable port was placed at the rear of the left side of the keyboard, not the rear side of the keyboard. I like using the cable for normal keyboard power and also like having the keyboard not on top of the Mac keyboard but on the table top pushed up flush against the Mac, but can't do that when using the charging/power cable.