I have an Anker A7726 Bluetooth keyboard. I primarily use it with my Apple TV at home, and it works perfectly well with no connection problems. I'm trying to connect it to my Mac Pro at work, and with "discover" enabled on the computer, I try to press the Fn + Z (bluetooth) keys, but the indicative flashing blue light doesn't happen to let me know it has entered pairing mode, and nothing happens on the computer. I've tried pressing them together quickly, and holding them together for several seconds. The keyboard powers on, with a brief blue light at the top blinking once as it normally does, but nothing happens to make it seem like it's entering pairing mode. What am I doing wrong?