Originally Posted by GeoVali99
I don't think it will be able to power a so big external hard drive.
For hard drives, in most cases you will have to supply external power as the N7 doesn't provide much (the 2013 seems to be a bit less than the 2012 version). I have used a Western Digital 1TB My Passport drive using this cable and a separate power pack:
This cable is for a USB 3 drive, a similar USB 2 cable is:
An OTG cable connects the N7 to the Y-cable. The rest of the Y-cable is connected to the external battery power source and to the hard drive. The hard drive is then accessed on the N7 using the Nexus Media Importer app (a rooted device gives more options). And note that the external power supply is not also charging the N7 battery - it is only providing power to the drive. One other thing - sometimes there is sensitivity to what is attached when - i.e., connect all of the external pieces together first and then plug the OTG cable into the N7 - I have see it sometimes occur that if I attach the OTG cable to the N7 first, followed by attaching the rest to the OTG cable that Nexus Media Importer does not connect to the drive.
Needless to say, a flash drive is much easier in that it just plugs in with the OTG cable and does not require additional power.