Replacement 3rd party dongle for wireless headset WL5022?

Moving between home and work office and having only 2 USBs ports on my laptop and having 3 sensors I have lost the dongle sensor for my wireless WL5022.

Dell support has said they are not sold separately and can't supply them.

Bluetooth connectivity between the laptop & headset frequently drops so is not a suitable alternative for me.

Has anyone bought a 3rd party sensor that reliably works with the WL5022 wireless headset that they can recommend?

Thanks!