I think an OTG cable is an OTG cable... I just tried the one that came with my USB keyboard folio case I use with my Nexus 7, which works fine with the HOX now its updated to the new HBoot/kernel.
LG Mako - AOKP PUB/STS Kernel | Asus Grouper - AOKP PUB/Faux Kernel | HTC Vision - Flinny CM10.1 | Barnes & Noble Ovation - CarbonROM
HTC EndeavorU (eMMC Corruption Brick) | Motorola Olympus (Cooked itself) | HTC Bravo (Sold) | HTC Dream (Retired) | Apple iPhone 2G (Retired as a music player) | HTC Hermes (LCD Died)
Free RAM is wasted RAM, foo!