This device supports Bluetooth 4.0, but is backwards compatible with Bluetooth 3.0, 2.1, and 2.0.
HSP/HFP headset profiles do not work, they require proprietary firmware: mention in pulseaudio docs, user's detailed comment .
A2DP profile works fine (headphone functionality only).
lsusb -v
Bus 007 Device 002: ID 0b05:17cb ASUSTek Computer, Inc. Broadcom BCM20702A0 Bluetooth Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 1 bDeviceProtocol 1 bMaxPacketSize0 64 idVendor 0x0b05 ASUSTek Computer, Inc. idProduct 0x17cb Broadcom BCM20702A0 Bluetooth bcdDevice 1.12 iManufacturer 1 Broadcom Corp iProduct 2 BCM20702A0 iSerial 3 5CF3708FFF77 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 218 bNumInterfaces 4 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 3 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 1 bInterfaceProtocol 1 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 1 bInterfaceProtocol 1 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0000 1x 0 byteshttps://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Bluetooth/#hspproblem:audioissilentorskipping bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0000 1x 0 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 1 bInterfaceProtocol 1 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0009 1x 9 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0009 1x 9 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 2 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 1 bInterfaceProtocol 1 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0011 1x 17 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0011 1x 17 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 3 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 1 bInterfaceProtocol 1 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0019 1x 25 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0019 1x 25 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 4 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 1 bInterfaceProtocol 1 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0021 1x 33 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0021 1x 33 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 5 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 1 bInterfaceProtocol 1 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0031 1x 49 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0031 1x 49 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 255 Vendor Specific Subclass bInterfaceProtocol 255 Vendor Specific Protocol iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 254 Application Specific Interface bInterfaceSubClass 1 Device Firmware Update bInterfaceProtocol 1 iInterface 0 Device Firmware Upgrade Interface Descriptor: bLength 9 bDescriptorType 33 bmAttributes 5 Will Not Detach Manifestation Tolerant Upload Unsupported Download Supported wDetachTimeout 5000 milliseconds wTransferSize 64 bytes bcdDFUVersion 1.10 Device Status: 0x0000 (Bus Powered)
hwinfo
05: USB 00.1: 0000 Unclassified device [Created at usb.122] Unique ID: 4m7i.GCgRyhKh3y1 Parent ID: BSFT.gkSaZmjGyhD SysFS ID: /devices/pci0000:00/0000:00:1d.1/usb7/7-1/7-1:1.1 SysFS BusID: 7-1:1.1 Hardware Class: unknown Model: "ASUSTek Broadcom BCM20702A0 Bluetooth" Hotplug: USB Vendor: usb 0x0b05 "ASUSTek Computer, Inc." Device: usb 0x17cb "Broadcom BCM20702A0 Bluetooth" Revision: "1.12" Serial ID: "5CF3708FFF77" Driver: "btusb" Driver Modules: "btusb" Speed: 12 Mbps Module Alias: "usb:v0B05p17CBd0112dcFFdsc01dp01icFFisc01ip01in01" Driver Info #0: Driver Status: btusb is active Driver Activation Cmd: "modprobe btusb" Config Status: cfg=new, avail=yes, need=no, active=unknown Attached to: #9 (Hub)
dmesg
[ 273.713778] NET: Registered protocol family 31 [ 273.713778] Bluetooth: HCI device and connection manager initialized [ 273.713781] Bluetooth: HCI socket layer initialized [ 273.713783] Bluetooth: L2CAP socket layer initialized [ 273.713787] Bluetooth: SCO socket layer initialized [ 273.741189] usbcore: registered new interface driver btusb [ 273.853511] Bluetooth: hci0: BCM: chip id 63 [ 273.854443] Bluetooth: hci0: BCM: features 0x07 [ 273.870493] Bluetooth: hci0: BCM20702A [ 273.871420] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000 [ 273.871498] bluetooth hci0: firmware: failed to load brcm/BCM20702A1-0489-e052.hcd (-2) [ 273.871507] bluetooth hci0: Direct firmware load for brcm/BCM20702A1-0489-e052.hcd failed with error -2 [ 273.871513] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-0489-e052.hcd not found
3G cards | 34 |
Acquisition cards | 34 |
Bluetooth | 57 |
Ethernet cards | 172 |
Fingerprint readers | 11 |
Host Controllers | 170 |
Modems | 18 |
Notebooks | 793 |
Printers | 126 |
RAID adapters | 20 |
Scanners | 24 |
SD card readers | 57 |
Sound cards | 142 |
Video cards | 343 |
Webcams | 132 |
Wifi cards | 234 |
TOTAL | 2367 |