As listed in the newest mikrotik newsletter: http://www.mikrotik.com/pdf/news18.pdf
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Newsletter #018. May 22th, 2009 1/2
802.11n support
Announcing two new MikroTik RouterBOARD products - R52n and R2n that both support wireless 802.11n standard in addition to 802.11abg or 802.11bg (in case of R2n).
Finally it’s possible to achieve 200Mbps actual data throughput over wireless links!
Starting with v4.0beta3 RouterOS now includes support for these 802.11n cards, that is unlocked by updating your RouterOS license with the new 8 digit SoftID.


