From all the available technical notes and descriptions you should be able to unscrew the cards antennae and add the extender and cable. It doesn't say specifically that the antennae on the card is an SMA connector but it looks like one from the picture. But if in doubt contact Newegg and verify prior to ordering.
Question is, would it actually help?
I'll definitely contact Newegg to ask about if it will be compatible
"Also, please note that Customer Service can not offer any Sales, Compatibility" looks like I have to contact the manufacturer(s).
but I don't know if they can tell me if it will really help. I'm assuming getting the antenna higher up and away from power cords will, but I've read elsewhere that long cables can make it worse.
Edited by Zarcasm, 17 September 2011 - 10:48 PM.