For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.
The Broadcom logo, "BCM94331PCIEDUAL", and "200-120101-0050 A"
- is silkscreened on the wireless module in the FCC photos.
Per a C2PC, this device is used (or will be) in the models:
BCM94331PCIEDUAL (SKU): Certification ID: WFA11860