Hi,
I found an old Belkin bluetooth (BT) USB dongle in a drawer, that was probably bought 5-10 years ago but seems to be working. Upon insertion dmesg shows:
[28065.627086] usb 1-8: new full-speed USB device number 14 using xhci_hcd
[28065.961741] usb 1-8: New USB device found, idVendor=0a5c, idProduct=4500
[28065.961746] usb 1-8: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[28065.961749] usb 1-8: Product: BCM2046B1
[28065.961751] usb 1-8: Manufacturer: Broadcom
[28065.965536] hub 1-8:1.0: USB hub found
[28065.969472] hub 1-8:1.0: 3 ports detected
[28066.279092] usb 1-8.1: new full-speed USB device number 15 using xhci_hcd
[28066.553559] usb 1-8.1: New USB device found, idVendor=0a5c, idProduct=4502
[28066.553562] usb 1-8.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[28066.568094] input: HID 0a5c:4502 as /devices/pci0000:00/0000:00:01.3/0000:01:00.0/usb1/1-8/1-8.1/1-8.1:1.0/0003:0A5C:4502.0007/input/input19
[28066.627490] hid-generic 0003:0A5C:4502.0007: input,hidraw3: USB HID v1.11 Keyboard [HID 0a5c:4502] on usb-0000:01:00.0-8.1/input0
[28066.711099] usb 1-8.2: new full-speed USB device number 16 using xhci_hcd
[28066.985599] usb 1-8.2: New USB device found, idVendor=0a5c, idProduct=4503
[28066.985602] usb 1-8.2: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[28067.008356] input: HID 0a5c:4503 as /devices/pci0000:00/0000:00:01.3/0000:01:00.0/usb1/1-8/1-8.2/1-8.2:1.0/0003:0A5C:4503.0008/input/input20
[28067.008591] hid-generic 0003:0A5C:4503.0008: input,hidraw4: USB HID v1.11 Mouse [HID 0a5c:4503] on usb-0000:01:00.0-8.2/input0
[28067.095082] usb 1-8.3: new full-speed USB device number 17 using xhci_hcd
[28067.378668] usb 1-8.3: New USB device found, idVendor=050d, idProduct=016a
[28067.378671] usb 1-8.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[28067.378674] usb 1-8.3: Product: BLUETOOTH USB **+EDR** ADAPTER **v2.1 UHE**
[28067.378675] usb 1-8.3: Manufacturer: Broadcom Corp
[28067.378677] usb 1-8.3: SerialNumber: **00190E0A2824**
The earphones are a cheap chinese thing that, however, pairs nicely with my android phone. It supposedly uses BT 5.1.
The full name is
TWS (true wireless stereo) earphones V5.1+EDR
From the minuscule “manual”, it’s BT specs are:
Version: V5.1+EDR (both sides), ultra low consumption
Mode: A2DP 1.3/HFP 1.6/HSP 1.2/AVRCP 1.6/D11.3
Frequency: 2.4 GHz
KDE system-settings BT module sees it as bruno-03 (00:19:0E:0A:28:24) hci0… (or something similar, the “0” is truncated, probably due to 4K monitor), and I can turn it on in the module. I’ve removed the pairing with the cellphone and tried put them in pairing mode, but However, the module won’t see the earphones to pair.
dmesg says it is v2.1, but also +EDR (in bold above). Is it too old? Shouldn’t BT V5 be backwards compatible?
Thanks,
Bruno