Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: I am looking for a cable to attach my nexus 7 to a portable hard drive to watch movies. Will this product work for that purpose?.
Document: Tried to connect my external hard drive and it did not work with nexus 5. a little bit disappointed with this product
Works perfect. If you want to use an external flash drive with your nexus 7 tablet this cable is a must have. Just download the data reader app, attach the cable, plug in your memory device, and you are good to go.
I use this to hook up a micro USB hub so that I can use my Nexus 7 to type notes at meetings rather than use a Laptop. This product works very well although I wished the right angle was turned the other way on the plug so it would work better with my Case/Stand but it's still functional.My only gripe about this product is that it does not &#34;Click&#34; in like the USB cable that came with my N7 does.
I rate this ok because it works but sometimes I have problems accessing the movies that I've downloaded on the flash drive attached. However, I'm not quite sure if it's the connection to my Nexus that's off or the OTG itself. At first, it appeared to work fine but recently it's been giving me some problems.
I purchased this cable so I could use a thumb drive on my Nexus 7. It did not work out of the box for that but that might be because my Nexus 7 is not rooted. Or, according to on-line suggestions, it could simply be the cable. I have not tried another cable and I do not plan to root my Nexus. that is the reason for the 3 stars. I did test to see if the cable worked with other things and I attached a keyboard.
Perfect fir my Gtab 8.3 to use my usb jump drive to watch movies very convienient.also great for transferring files to and from the tablet via an usb hub card reader i love it
works great on my nexus 7 2013 ,work with flash drives gamepads fightstick etc, I highly recommened this product. .
I received this product in a genetic plastic bag with a computer generated bar code sticker on it. No where does it indicate that it is made by Asus. I paid the extra money after reading horror stories of people bricking their Nexus 7 with low quality adapters. This one appears to be the same cord as the $1-2, but advertised as made by Asus. Not cool! So far it seems to work, but I feel like I was taken.
Both of the micro USB cables plug into my tablet just fine; so far I've used the OTG cables to move tablet backups to my Flash drive and import media from my external hard drive to the tablet. I think what throws some people off is that when you plug the cable into the tablet port, part of the silver metal plug is still visible; it does not connect flush with the tablet.
I ordered this cable so that I could use USB devices (flash drives, keyboards, mice, game controllers) with my 2nd Gen Nexus 7 table. It seems to be working fine with the various devices I've hooked up, but as some other reviewers have noted, the micro-usb plug is oddly longer than most standard micro-usb cables by about 2-3mm (check out my product image), which causes the plug to feel somewhat "wobbly" when plugged in.
Answer: It will if your Nexus is rooted and you are running something like Stickmount, which is available on the play store, but requires root access to run.  If your portable harddrive requires power over USB you're going to have a tough time powering it from the Nexus 7.  If it is just a thumb drive that will work without a problem.  If you want to get elaborate with it, you can get a powered USB hub (which will power all manner of external harddrives), and get a USB OTG Y cable, and replace your kernel with Timur's kernel, which will allow you to charge the Nexus at the same time as accessing everything plugged into the USB hub.  For more info on this you can message me back or read up about it all on xda-developers.com.