bluetooth is built in i think, i don't think you need to plug anything in. It's all the way at the top, same place the wifi stuff is in.
the 2 antennas are for wifi
I can confirm this is factually wrong. Just goes to show me what I get asking for help from people who have no idea what they are talking about.
Without the antenna, the Bluetooth has a range of about 3 inches from the motherboard. You need to plug in the 2X antenna for Bluetooth to work.
Bluetooth probably uses the same antenna as:
1 x ASUS 2T2R dual band Wi-Fi moving antennas (Wi-Fi 802.11a/b/g/n/ac compliant)
Reason: Bluetooth and WiFi both uses 2.4GHz (WiFi 802.11n and .ac can also use 5GHz).
The WifI antenna for 802.11ad is for 60MHz so the antenna is not suitable for the wavelenght of Bluetooth (2.4GHz)
The antenna for Bluetooth/WiFi have two connectors, try connecting one at the time to see which enables Bluetooth. (Hopefully the other connector combines WiFi 2.4/5GHz)