Storage [Q] which otg cables / devices do work?

Hey Guys,

i wasn't able to find an answer, maybe you can tell me:
which otg devices are supportet by our photon q? i bought a simple otg adapter, but i thought about buying an otg with power supply or an otg card reader + usb device. ive seen some devices with hdmi and more, but those seem to work only with MHL devices.

please tell me what you know

greets

edit:
those are some of the devices i mean:

http://www.amazon.de/KooPower-Reader.../dp/B00G4406HI

http://www.amazon.de/Adaptare-Micro-...5&keywords=otg

http://www.amazon.de/Wicked-Chili-Ve...8&keywords=otg