For a list of all currently documented Qualcomm Atheros chipsets with specifications, see Qualcomm Atheros.
FCC approval date: 01 December 2017
(Est.) initial retail price (in USD): $59
Form factor tags: Mini Card
WI1 chip1: Qualcomm Atheros QCA9880-BR4A
Flags: 256QAM, high power, heatsink
has accessible UART
802.11ac 3x3 MIMO miniPCIe Card
- Product page
A message on the ath9k mailing list which notes the chip P/N (QCA9880-BR4A), as well as the lspci -nnv output.
On eko.one.pl forums (OUI used is 4C:5E:0C)