EMP-8602 power offset on ROS 3.4?

Is there a power offset on this card EMP-8602 PLUS-S 600mw card?

I have it in 802.11a mode 5.8ghz supposed to have output power 20dbm.

Thanks!

Nevermind, this card doesnt work on ALIX boards, neither does an XR2… Teaches me for straying.