I think there is some kind of storage on PowerConf, for the firmware, and there used to be a device shown on Windows with the name Anker BLE (name sounds more like for Bluetooth) when PowerConf was connected to Windows and since this is connected via USB-C Cable. However I no longer see it now, may be went off with firmware update on PowerConf or something to do with what I disabled on my laptop BIOS…
One other point of interest it – there is no way to Bluetooth Pair PowerConf with Windows as Headset / Speakerphone (use Speaker and Microphones) … it only works with the USB-C Cable as Speakerphone… Anker is somehow having some kind of config on PowerConf to avoid the BT pairing for Speakerphone on Windows (and I think for Macs too)
If BT paired to Windows, works only as Headphones - Only Output audio via Speaker - microphone does not work.