Can TP-Link WDN-4800 do 450mbps or just 300?

[syd]

My Macs on Airport Extreme can connect at 450 mbps. I can only get the TP-Link WDN-4800 to connect at 300 - is this the fastest this hardware can connect with the AEBS?

 

[cochon]

I have TP-Link WDN-4800 link speed 450 Mbit/s, but my routter is Linksys E4200 version 1.0 run DD-WRT

 

[syd]

Thx - anyone able to confirm 450 with an Airport Extreme, gen 3, 4 or 5?