Another Broadcom device from ASUS to support 3 digits multiple vlans at port level, this time a gigabit with USB2 on the Black Diamond design, nice & cool 
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Courtesy from ASUS for the following test unit and custom beta firmware for UniFi, thanks guys 
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Actual size exactly the same like RT-N56U, noticed it comes with a bracket for several placing position, either horizontal or vertical stand, or can even mount on wall, nice !
Ports layout also similar to RT-N56U, except it has only 1 USB2 port and no LED port lights indicator
UniFi VIP5 in action, this is where the Black Diamond shine, damn cool man 
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Can you see the interior ?!
Company: http://www.asus.com/
Product: http://www.asus.com/Networks/Wireless_Routers/RTN15U/
FCC ID : MSQ-RTN15U
Stock Firmware Utilities & Manuals (NOT for UniFi !!) : http://www.asus.com/Networks/Wireless_Routers/RTN15U/#download
I have yet to find out from ASUS Taiwan on exactly what Broadcom chip, Flash & RAM size, been getting rather confusing information from ASUS Wiki and some Russian forum as follows 
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Update: Managed to get actual spec detail from ASUS Taiwan :
Alright UniFi folks, show time !
The first custom beta firmware 11.28.1.1.32 connected on my HG850a, both internet vlan.500 & IPTV vlan.600 no problem 
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Click HERE for beta firmware test [11.28.1.1.32]
Click HERE for custom firmware & setup
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