FAP-221C chipset?

Without physically opening up our FAP-221C units, does anyone happen to know what WiFi chipset they would be using?  e.g. Broadcom or whatever?  My interest was piqued by this story:

https://www.zdnet.com/article/cisco-says-patches-incoming-to-address-new-kr00k-vulnerability-impacting-routers-firewall-products/