AFAIK it will support any MX style switch since the switch LEDs are low profile enough to be flush with the PCB. So the switches do not need to be SMD LED compatible, although using switches that have solid colored bottom housings will basically render the in switch LEDs useless. Switches like Zealios that only come in PCB mount (5 pin) can be made to work with the board by clipping the 2 plastic legs off the bottom of the switch. With other switches you'll want to get the plate mount (3 pin) variants just to make your life easier.