IBM Integrated Bluetooth III with 56K Modem (BMDC-2)

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IBM Integrated Bluetooth III with 56K Modem (BMDC-2)

This is a combination AC'97 Bluetooth and Modem Adapter that is installed in a CDC slot.


  • Chipset: Actiontec BMDC200B Bluetooth Controller and Conexant SmartV.92 Softmodem Controller
  • Speeds: 434/723 Kbps (Bluetooth 1.1) and 33.6/56.6 Kbps (V.34/V.90/V.92/K56flex)
  • PCI ID: Varies, depends on the AC'97 modem controller's PCI ID
  • USB ID: 1668:2441
  • Headers: One 2-pin connector, one Hirose U.FL connector


FRU PN: 27R1880, 91P7319, 93P3471

Also known as....

  • Integrated Bluetooth III with 56K Modem,
  • Integrated Bluetooth III with 56K Modem, Actiontec

Linux Bluetooth driver

This card will work with the standard Linux Bluetooth drivers.

This device is implemented as a USB device, you might be able to enabled or disabled it with the FnF5 key combination (or: echo 1 > /sys/devices/platform/thinkpad_acpi/bluetooth_enable)

Linux modem driver

See Conexant HSF modem drivers.


There is an issue regarding connectivity with this softmodem, likely due an outdated K56flex firmware. See Need to disable 56K modem speed for a workaround.

External Sources

This card may be found in