Basically the same hardware platform like the RT-N12-B1, now dressed with ASUS latest wave of black + mate design, nice & cool ! 
Again, thanks to ASUS team for the consistent effort in making every new router able to work with UniFi with 3 digits vlans 
Product photos
New design with black packaging as well
The size, antenna nicer look, slightly shorter than previous RT-N12-B1, overall light weight feel
Port layout the same like RT-N12-B1
Can be wall mounted
Mate design with diamond shape surface feel, nice & cool !
N12 family photos
The 3 models, growing from the past !
The 3 musketeers, hehe 
UniFi in action ....
UniFi in action, both internet vlan.500 & IPTV vlan.600 no problem ! 
Company: http://www.asus.com/
Product:
- http://my.asus.com/Networks/Wireless_Routers/RTN12_C1/
- http://www.asus.com/Networks/Wireless_Routers/RTN12_C1/
FCC ID : MSQ-RTN15U
Wiki links:
Stock Firmware Utilities & Manuals (NOT for UniFi !!) : http://my.asus.com/Networks/Wireless_Routers/RTN12_C1/#download
Click HERE for UniFi custom firmware test [ RT-N12C1_2.1.1.1.33-3UNIFI ]
Click HERE for firmware & setup