USB Receiver for TzBBL-MOFII 2.4G Keyboard and Mouse CombosUSB Adapter，only for 2.4G wireless keyboard.Used for MOFII 2.4G Keyboard Mouse SetUsed for TzBBL 2.4G Keyboard Mouse SetThis USB receiver is also compatible with KNOWSQT/UBOTIE/Dilter/LETTON Brand 2.4G 104 keys keyboard and mouse setsReceiver Matching Steps ：step 1 : Take out the battery from keyboard and mouse； Step 2：Plug the receiver into the USB interface of the computer; Step 3 : Install the battery.Not compatible with single keyboard or single mouse