Upgrade a PTC-IIusb modem with this complete Bluetooth Module to enable use with Bluetooth equipped computers. 

PLEASE NOTE: this is a hardware modification and requires a qualified technician to install the part.

Some early production IIusb modems require soldering on the PCB,  If your unit has a serial number starting with UN2406 or less (UN2306, UN2206, etc.), your modem needs to be returned to Farallon for upgrading.