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Linksys WPC55AG v1.2
WPC55AG v1.2 serial numbers appear to start with MDL2.
This device may use U-NII-2 channels but does not implement DFS since it predates the FCC requirements.
lspci -nnv dump
06:00.0 Ethernet controller : Qualcomm Atheros AR5212/AR5213 Wireless Network Adapter [168c:0013] (rev 01) Subsystem: Linksys WPC55AG v1.2 802.11abg Cardbus Adapter [1737:0035] Flags: bus master, medium devsel, latency 168, IRQ 19 Memory at f1d00000 (32-bit, non-prefetchable) [size=64K] Capabilities:  Power Management version 2 Kernel driver in use: ath5k
ath5k info dump
[41133.018779] ath: EEPROM regdomain: 0x10 [41133.018788] ath: EEPROM indicates we should expect a direct regpair map [41133.018793] ath: Country alpha2 being used: CO [41133.018797] ath: Regpair used: 0x10 [41133.018945] ieee80211 phy30: Selected rate control algorithm 'minstrel_ht' [41133.019262] ath5k: phy30: Atheros AR5213A chip found (MAC: 0x59, PHY: 0x43) [41133.019264] ath5k: phy30: RF5112B multiband radio found (0x36)