(adsbygoogle = window.adsbygoogle || []).push({}); Lets compile a list of all USB devices (not just controllers) that still work after 3.50. If you have something that works, or doesn't and it isn't on the list post a reply.
*A Note: This thread is contantly being updated and on occassion a product will be mistakenly reported as function or non-functional. I go by what I am told in this thread and on Kotaku, so if you see anything on this list that is incorrectly labeled please post a correction in this thread. In cases where I get several conflicting reports, I will place it in Status Uncertain until I get more information.*

Working:
All Official Products (DualShock 3s, Eye, etc)
Generic USB mice and keyboards (Logitech and HP confirmed).
Generic external storage mediums (flash drives, external harddrives; Eagle Tech, Seagate )
Logitech USB Headsets/Desktop Microphones
All "professional" gaming headsets (Turtle Beach, Tritton, Astro, etc)
Hori Brand Sticks (Flight and Fight, pun unintential)
PIII Converter: Model 538 Dualshock 2 Adapter
Nyko Media Hub
Logitech G27 Racing Wheel/Driving Force GT
Buzz Quiz TV Buzzers
DJ Hero Turn Table
RedOctane USB Dual Shock adapter
Mayflash Super Joy Box Pro and Super Dual Box Pro USB Dual Shock adapter
Retrolink USB Saturn Controller and other Sega Saturn USB Controller clones
MadCatz 2009+ Wireless/Wired Controllers
MadCatz Super Street Figher IV Wireless FightPad Second Generation
MadCatz Street Fighter IV Standard Edition Fight Stick
MadCatz Super Street Fighter IV Chun-Li Tournament Edition "S" FightStick
Bannco FRAGnStein Wireless Mouse Controller (functional after a firmware update available on bannco website)
Pelican PS2 to PS3 usb controller adaptor
Logitech Chillstream controller
Guitar Hero III Les Paul Guitar with USB dongle
Toodles' Cthulhu PCBs (Includes MC-Cthulhu)
Inpin PS2->PS3 Converter
Paewang Revolution/Datel Arcade Pro
Splitfish FragFX V2
Power a Pro Elite Wireless Controller
Logitech Band Instruments
Logitech Harmony 700 Remote via Logitech Harmony Adapter for PS3
GameStop PS3 USB Gamepad
Saitek PS2700 Rumble Pad
XCM Cross Battle Adapter Plus

Non-functional:
MadCatz 2008 Wireless/Wired PS3 GamePad/MicroCon
MadCatz Super Street Figher IV Wireless FightPad First Generation
Splitfish FragFX V1
Venom PS2 to PS3 Adapter
Subsonic Arcade Sticks
Psyclone wireless controllers
Blaze PS3 FIGHTSTICK

Status Uncertain:
Other Cross Battle Adapters
Western Digital External HDDs

um did u read the thread all the way lol ;p

rockband controllers & dongles

Thanks bro guide , very helpfull :y:

your welcome

Just tell me if I'm wrong but is this a list of all the devices that PSdowngrade etc COULD be ported to?

Nice guide mate thanks =D