Re: USB adapter help
OP I believe you are referring to an otg usb. If so, you probably have stock ROM 4.1.x. Samsung disabled otg support at least for p3113. I had to use a custom ROM like sungsonic hd. I lost IR blaster support but I use otg more often. I suggest you do same.
Sent from my HTC One VX using xda premium
Primary Phone: LG G2 CyanogenMod 11.
Tablet: Asus Nexus 7 ALL-F2FS Cyanogenmod 11.