I have recently bought used Wifi card for my laptop. Intel Centrino 622ANHMW. I confirm OpenBSD can use this card as usable,practicable network interface.
Code:
# sysctl kern.version
kern.version=OpenBSD 6.0-current (GENERIC.MP) #8: Sat Dec 3 22:18:48 MST 2016
build@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
# dmesg | grep -e iwn
iwn0 at pci3 dev 0 function 0 "Intel Centrino Advanced-N 6200" rev 0x35: msi, MIMO 2T2R, MoW, address ********
# lspci comes from ports (./sysutils/pciutils)
# lspci -nn | grep Centrino
03:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6200 [8086:422c] (rev 35)