What is an SPP (Serial Port Profile)?
SPP (Serial Port Profile) is a classic Bluetooth profile. SPP defines the requirements for Bluetooth devices necessary for setting up emulated serial cable connections using RFCOMM between two peer devices.
Many devices use a Serial Port Profile (SPP).
Some examples of devices using an SPP include GPS receivers, EM sensors, and some barcode/RFID scanners.
This article explains how to pair a device using an SPP to a Windows device with Bluetooth and how to locate an assigned COM port number.
Bluetooth pairing
Turn on both devices.
Go to Start > Settings > Devices > Bluetooth & other devices.
Turn on the Bluetooth toggle.
Select Add Bluetooth or other device.
Select Bluetooth.
Locate the device in the list and select it.
When prompted for a PIN, enter the assigned Bluetooth pairing code. If the device does not have an assigned code, try one of these common pairing codes:
- 0000
- 1111
- 1234
- 0123
- 0183
Locate the assigned COM port number
Once the device is connected to Bluetooth, locate the COM port number through More Bluetooth Options or the Device Manager.
More Bluetooth Options:
Go to Start > Settings > Devices > Bluetooth & other devices.
Scroll down to Related settings, and select More Bluetooth options.
Select the COM Ports tab to view the assigned outgoing COM port.
Device Manager
Go to Start > Device Manager.
Select Ports (COM & LPT).
The outgoing COM port will be listed.
