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Editing Step 15 —

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The RF module, in all its blue glory. We spliced together two photos, so this image shows the front and back of the PCB.

The Broadcom 802.11 chip had the markings BCM4321KFBG.

We removed the EMI shield covering the RF chips. We uncovered a Skyworks SKY652225-11 R8, a Broadcom BCM2G55KF86, a Broadcom BCM2046, and an SST 39VF200A. We also found eight of Anaren's 1mm square baluns interfaced between the Broadcom and Skyworks chips, presumably running at 2.4GHz and 5GHz.

And the backside had another chip marked with BCM94321COEX2.

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