ASUS N66U speed question/issue

[JamesM]

I have the following network card in my laptop

http://www.overclockers.co.uk/showproduct.php?prodid=NW-012-IN&groupid=46&catid=1597&subcat=2651

Now at work I have a Netgear DN2000 and I connect at a speed of 'up to' 270mbps.

This router is a good few years old now yet I can only seem to connect to my N66U at 140mbps, no more. I don't believe the wireless card uses the 5GHz network but this isn't used at work from what I can tell either.

I've checked over settings again and again but can't seem to resolve this.

Any ideas? (i'm not fluent with wireless hardware/speeds)

 

[JamesM]

n/m

Found it can combine two 20Hz channels into 40Hz and give me the 300mbps speed but it appears there's too much interference to do this.

Will just get a 5GHz wireless card instead.