802.11n with or without legacy mode? frequency?

[pit29]

Just bought a TimeCapsule and set up my wireless network using it. I am actually wondering about the differences in choosing 802.11n: b/g compatible or not? 2.4GHz or 5GHz? Is any setting faster over others?

I have a MBP, 802.11n enabled, and a first-generation iPod touch. I will have occasional visitors using my internet connection using their (mostly) Windows laptops. Do they usually have 802.11n, or would I need a b/g mode for that?

Confused...

 

[Nermal]

I believe that iPods only support b and g, and only 2.4 GHz.

 

[el3ctone]

i have my AEBS running on 802.11n - 5ghz mode only.

I have another linksys that runs in b/g mode.

This way my N wont be slowed down because a B/G client (more specifically, everything else thats not my MBP) connects to it.

 

[brand]

I believe that iPods only support b and g, and only 2.4 GHz.

According to the iPod Touch Specs you are correct.

 

[pit29]

So is it correct that a b/g/n network is slower for n-enabled devices than a pure n network? Looking at Apple's page here, it's not obvious...