Marshall,
Thanks for the answer. I suspected as much.
After the OP, I came across a YouTube video from COMPUTEX 2013, Taiwan, in which they were discussing (at the time) the upcoming Front Base.
In the vid they were running both the Front Base & the OC Panel simultaneously on the same system (I believe it may have been in a Cooler Master Cosmos case, mobo type unknown).
The OC Panel was not displaying all the data that it could, so I assume they just had the USB portion (only) plugged into the mobo vice the entire ROG_EXT Connecter ?
They may have used the included standard ASUS USB connection extender to allow the OC Panel to connect just to that portion of the mobo ?
I will attempt this type of configuration in the next couple of days to verify (partial) OC Panel connectivity.
The referenced vid is at:
https://www.youtube.com/watch?v=Lvqra7G52f4 by ThinkDigit.com, I believe.
Thanks
System Info: Maximus VI Extreme; Intel i7-4770k; G.Skill Trident-X, 2400 x 32 GB; PNY Optima, 240 GB x 3; WD Black, 4 TB x 2; EVGA 780 Ti Dual Classified ACX; Cooler Master HAF-X; Cooler Master Nepton 280L; Corsair AF 120 & 140mm Fans, Cooler Master MegaFlow 200 & 230mm Fans; XFX Pro 1000W, Platinum PSU; Windows 8.1 Pro; Logitech G19s, G602 & C920; Accessories: ASUS- ROG Front Base, ThunderboltEX II, & NFC Express; NZXT- HUE RGB LED Controller, IU01 USB Expander, & Grid Fan Hub.