This Micro USB Host OTG cable works for connecting OTG function.
With this Micro USB Host OTG cable, you can connect your device to most USB Flash Drive, Mouse & Keyboard.
It also works with external hard disk, BUT you need external power source for the hard disk.
It should also work with non-power hungry card reader. Total length of this cable is about 12 cm including the plug.
STRAIGHT OTG CABLE FOR SAMSUNG GALAXY NOTE 5 S7 EDGE THE NEW HTC ONE M9 GALAXY NOTE 10.0 OTG