To set up Bluetooth on an HP printer, first enable Bluetooth on the printer itself through its menu under network settings, selecting “Bluetooth low energy” to turn it on. Then, on your phone or computer, go to the Bluetooth settings, find and select the HP printer to pair with it. If a PIN is requested during pairing, consult your printer’s manual (common defaults are 0000 or 1234). After pairing, use the HP Smart app or the device’s print option to send documents to the printer via Bluetooth[1][2].
More specifically, for an HP OfficeJet Pro 9120e:
1. Go to the printer menu > Settings > Network.
2. Select “Bluetooth low energy” and switch it on.
3. On your phone, enable Bluetooth, select the printer from available devices.
4. Download and open the HP Smart app to connect and print wirelessly[1].
This general process applies similarly to most Bluetooth-enabled HP printers. Be sure your device and printer support Bluetooth printing, as some models only support Wi-Fi. If pairing issues occur, restarting devices or reinstalling the HP Smart app can help[2][4].