The new revision 3.0 of the RT-N66U – A small fan which was previously there is gone and replaced by a large passive heatsink over the 2 Broadcom radios. The 1-piece PCB is also blue instead of red and some of the components have been reshuffled around.

P1020665 ASUS RT N66U Dual Band Gigabit Router Preview (Final Retail Revision)

470uF capacitor at the power input

P1020668 ASUS RT N66U Dual Band Gigabit Router Preview (Final Retail Revision)

 

Mingtek Transformers used at the Gigabit PHYs

P1020669 ASUS RT N66U Dual Band Gigabit Router Preview (Final Retail Revision)

 

Possible hotrod connector?

P1020671 ASUS RT N66U Dual Band Gigabit Router Preview (Final Retail Revision)

 

MicroSD slot for memory expansion

P1020672 ASUS RT N66U Dual Band Gigabit Router Preview (Final Retail Revision)

 

Flipside of the PCB – a large metal sheet covers its jewels

P1020674 ASUS RT N66U Dual Band Gigabit Router Preview (Final Retail Revision)

 

SPANSION 256MB 3V Flash Memory 

P1020673 ASUS RT N66U Dual Band Gigabit Router Preview (Final Retail Revision)