I got an A2 DGL-4500 set to the specs outlined in the sticky topic, but I can't get 300mbps in 2.4ghz mode. I've got it successfully working in 5ghz wireless N mode only, but cannot get it to work in 2.4 ghz N and G mode. In 2.4ghz mode, I see a max connection of 130mbps.
I have a laptop with an Intel 4695AGN wireless card... since this works under 5ghz standalone, why isn't it working as outlined in the 2.4ghz spectrum?
Here's some benchmarks with Windows 7:
452mb file, auto 20/40
5ghz n only, 38 seconds ~12MB'sec
2.4ghz n only, 81 seconds ~5.6MB'sec
2.4ghz n/g, 155 seconds ~2.8MB'sec
The first 2 only had the one N laptop connected, the third had a couple clients (with minimal activity).
Here's a link to my wireless cards spec sheet: http://www.intel.com/network/connectivity/resources/doc_library/tech_brief/316286.pdf