Yes. The Slim EX Wireless Mouse can share its 2.4GHz USB-C receiver with the Slim EX1 Wireless Keyboard, so both work from one receiver on one computer. If you bought them separately, use the receiver that came with the mouse and pair the keyboard to it.

1. Charge and turn on both. The keyboard power switch is on the top edge. The mouse power switch is on the back.
2. Take the 2.4GHz USB-C receiver out of the mouse. It is stored inside the battery compartment.
3. Plug the receiver into a USB-C port on your computer. The mouse should connect on its own. If it does not, remove the receiver, hold down the right and middle mouse buttons while turning the mouse on, then plug the receiver back in.
4. Pair the keyboard to the same receiver. Remove the receiver from your computer. Hold the Fn key while pressing the 2.4GHz dongle key (the same key as R). Plug the receiver back in. The keyboard finds the receiver and connects.
5. To switch the keyboard to the receiver later, press Fn + R.

The Slim CEX1 Wireless Combo includes one receiver that connects both the keyboard and the mouse.