Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Does this cable work with a Hisense pro 7 inch tablet? Does it need any external power to run?
Document: Not much to say but works great. Haven't had any problems with it at all. I use it to connect my Hisense Sero 7 Pro tablet to my 42&#34; LCD TV and the picture is great, There aren't any connection problems. If I needed another this is the first place I would go.
Of course I ended up returning my Hisense Sero 7 pro and selling my droid razr and purchasing a Galaxy Note 2, but not before receiving this cable and putting it to the test, and it definitely does what it was supposed to and it's pretty good quality.
So, I messed up. Failed. Made a mistake. Screwed the pooch. Insert other colloquialisms here.I ordered this cable to run from my Nexus 7 to an HDMI TV: that was foolish on my part. Not only did it not even fit in the port, but I neglected to realize that running from micro USB to HDMI requires a completely different converter (lesson learned).
This makes connecting the Sero 7 Pro to my big screen tv a snap! Now I can show others what I have on the Sero 7 Pro with ease.. Watch movies,  Play games.. share photos with friends and family!
Received quickly and was a great price. Unfortunately, that's $7 down the drain. It doesn't work. I've tried it from multiple devices to multiple tv's and monitors. The cable doesn't work, and unfortunately I'd waited too long before finding that out to return it. Buyer beware.
I was in need of these cables to connect my tablet, along with some other media devices,  to my HD TV . The price offered on these items was unbeatable compared to someplace like BestBuy or even a Wal-Mart for that matter. The cables where shipped with protective end caps to avoid any damage during shipping, and were individually wrapped. The cables seem to work great, and I had no issues with the picture or sound quality for the product they were being used for.
I bought this to connect my iRulu 10.1 inch Android 4.0 to my tv.It works perfect.If you have android tablet i highly recommend this cable.
My cable arrived on schedule. The cable is a high quality item. It makes a solid connection. The item was very well packaged. My Nextbook 8 inch tablet can now be viewed on my tv. I recommend this cable and the provider. I gave a 5 star because everything was perfect.
i bought an Ainol Novo 7 Elf 2 and it had the micro hdmi cable. the video is very good on the tablet and having this cable allows me to watch programs on my big screen with great resolution. this cable does what it is supposed to do and does it at a fair price.
I used it for my 7" Android Skytex2 tablet.To test the cable, I played a few HD videos from the tab onto the TV and the quality was amazing.There is not difference in the quality transmitted to the TV and the Netflix movies, I watch by directly streaming on the TV. This, I think, is the proof that the cable does perfectly what it is supposed to do.
Answer: I hooked up my tablet to the TV via this cable and are able to view my photos on the big screen. Also, I had downloaded some movies and they play as well. The tablet has a HDMI mini plug and this cable hooks up to it. As to the external power, I guess that depends on how long you use it.