Bluetooth Daughter Card (BDC)

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Bluetooth Daughter Card (BDC)

This is a Bluetooth Adapter that is installed in a CDC slot.


  • Chipset: TDK
  • USB ID: 04bf:0310

IBM Partnumbers

IBM FRU PN: 12P3872, 26P8071

Also known (in IBM literature) as....

  • Bluetooth Daughter Card
  • Bluetooth Daughter Card board
  • BDC board


A firmware update is available for this adapter from IBM.
The updated firmware is version 310, and is available here

This firmware update can unfortunately only be applied from Windows.
In theory a Linux exists for that purposes, the BTDFU update utility that can be found on the pages of Marcel Holtmann, the current Linux BlueZ stack maintainer, which can be found here. You need to get the original IBM update file and extract the file with the extension "dfu" from it using cabextract. Using the btdfu tool and this file it should be possible to update the firmware. This procedure has not yet been confirmed.

Linux driver

This card will work with the standard Linux Bluetooth drivers as part of any recent 2.4 or 2.6 kernel

This device is implemented as a USB device, which can be enabled or disabled using a button under the display.

Also be aware that this card has a three pin connector used for currently unknown purposes. The later model Thinkpads have a two pin connector that will not fit.

ThinkPad's this card may be found in

External Sources