Thank you Heidi. I don't think Windows 7 can handle Bluetooth 5.1. Bose QC 45 are Bluetooth 5.1 LMP 9 Bluetooth Core Specification on Windows 7 is 5.0. I'll have to use the audio cable or upgrade to...

Thank you woozle. You are quite correct. I don't think Windows 7 can handle Bluetooth 5.1. Bose QC 45 are Bluetooth 5.1 LMP 9 Bluetooth Core Specification on Windows 7 is 5.0. I'll have to use the...

I have recently purchased a set of Bose QC45 NC headsets. Sound, comfort and noise-cancelling are first class when connected via audio cable. My desktop is a Dell Optiplex using Windows 7 Pro and has...