The only thing I would watch out for is, even if they are OTG cables, one of the wires in the cable needs to be shorted correctly otherwise it won't work.
First cable I got from a PC shop wasn't shorted didn't work, cable I got off ebay with my PU leather case for my tablet works 100% plus it picked a modem not on the list so bonus.
If you have the tablet to USB2 cable you can also consider using USB reverse tethering, also some where on play store, also works pretty darn well, no root needed for that
