Plug into PC search device and you may get lucky and it labels the Jailbreak, and don't say generic usb. Other than that ?? Google image ps3 key and see if you can find a picure, usually there is a label under the picture describing the pic. Painstaking but that is your option if nobody jumps on here and says "thas XXXXX board"
That looks like a AT90USB162 , so a Atmel chip. Get yourself the atmel Flip tool, install the drivers in program directory and choose the proper board (AT90usb162) and try to open it with Flip. For the hex i guess you can use the one for Teensy v1. Not the ++ version!!
Edit: Well the photo quality isnt that good and i cannot see a upgrade button on that thing. In this case you have to figure out how to reset that stick. You`ll need to solder anyway then.
I guess its a AT90usb162 or a USB-A3-V2.0 (Atmel).