M9470LL/A, model A1084 includes:
The main processor of the 802.11g AirPort Express is a Broadcom BCM4712KFB wireless networking chipset, which is backwards compatible with 802.11b, and incorporates a 200 MHz MIPS processor. The audio is handled by a Texas Instruments Burr-Brown PCM2705 16-bit digital-to-analog converter.