Keyboard connection method: 1: Turn on the ON/OFF switch. 2: Press CONNECT, the indicator of the Bluetooth logo will flash. 3: Turn on the Bluetooth switch of the device such as tablet/smartphone, search for Bluetooth device, the default Bluetooth name of the keyboard: Bluetooth 3.0 Keyboard. 4: Click the Bluetooth 3.0 Keyboard on the tablet/smartphone, press the Enter to connect. Note: The keyboard cannot be connected to two devices at the same time. Therefore, if you want to replace another device, you must first disconnect the pairing connection of the original device. Product Specifications: Keyboard Layout: US QWERTY Bluetooth Version: Bluetooth 3.0 Buttons: 78 keys Working Range: Up to 10 meters Material: ABS +Aluminum alloy Charging Interface: Micro USB Hot Keys: Fn + function key, press Fn and the blue keys Wide Compatibility: Compatible with Apple iPhone iPad Android Windows tablet phone smartphone.?Note: It may not be possible to connect to the device via the Bluetooth adapter.? Compatible with iPhone such as iPhone 12 Pro Max mini, iPhone SE 2020, iPhone 11 Pro Max, iPhone X XR XS Max etc. Compatible with iPad such as iPad Pro 9.7/10.5, iPad Pro 12.9 inch 2nd 3rd 4th 5th gen, iPad Pro 11 inch 1st 2nd 3rd generation, iPad Air 3rd gen 10.5, 4th gen 10.9, iPad mini 2/ 3/ 4/ 5 2019, iPad 4th 5th 6th gen 9.7, 7th 8th generation 10.2 2020 etc. Compatible with Android tablet smartphone such as Samsung Galaxy Tab a a7 s6 lite s7 plus s7+ Note S etc. Package including: 1 * Bluetooth Keyboard 1 * USB Cable If you have any questions, please contact us, we hope to provide you with good products and good services until you are satisfied. We provide one year warranty service, so you do not have any risk. If you are not satisfied with our products, we can replace you with a brand new product or a full refund to you.