If switching between devices isn’t working on your Slim EX3 Wireless Keyboard, try these steps:

• Make sure each device is paired to a different channel (1, 2, or 3).
• Press and hold the channel key (Fn + 1/2/3) for 3 seconds to re-pair that channel.
• Check that each paired device has Bluetooth enabled and is within range.

If the problem continues after these steps, submit a support request.