Installed airport extreme OK, netwk utility says it's not 802.11n

Installed new Airport Extreme without problems. Mac has 2GHz Intel (iMac 4,1), so it should be capable of 802.11n. Network Utility shows (802.11 a/b/g) under Interface (en1). Should this not be 802.11n? How do I know I'm using 802.11n?

Hi
What you see under the e1 interface is what the Airport card can have as WiFi
if you only see 802.11 a/b/g then it would mean that your imac is not 802.11n
able. You should be able to read something like
Wireless Network Adapter (802.11 a/b/g/n)
and linkspeed 300 Mbit/s if you have n

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