Next, if unsure what type of wireless mice and keyboards you have, look for a matching logo mark on the bottom (the side that rests on the desk surface) of your Logitech wireless products. If your Logitech wireless device did not come with a USB receiver, your wireless keyboard or mouse may have Bluetooth wireless connectivity or is Logi Bolt enabled. Look for a Logi Bolt logo on the bottom (the side that rests on the desk surface) of your Logitech wireless products. If you see a Logi Bolt logo that means your device is compatible with a Logi Bolt USB receiver even if one did not come in the box.