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Cisco Aironet 802.11ac Module (RM3000)
Per the FCC photos, this device appears to be an expansion board (w/ Altera PLD/FPGA) for a Mini PCIe (full-size) wireless module.
The FCC test report indicates that the FCC ID also covers the AIR-RM3000AC-N-K9 and AIR-RM3000AC-Z-K9.
A label affixed to the device in the FCC sample label (reading BCM SROM 1203) shot as well as the correspondence letters indicate the device uses a Broadcom chipset , likely BCM43460.