Instruction: Answer the given question using the supporting document.

Input:
Question: how much storage can be added with micro sd?
Document: I LOVE my Azpen X1. I do agree with reviewers that the storage capacity of the windows boot is small (ok, its almost nonexistent!) but with a little SD card, and the fact that you can use thumb drives, external hard rives, cd drives, or anything else that works with a USB (which is pretty much ANYTHING! ), it more then makes up for this.
I've taken to installing additional software on a 32gb micro sd card.The SD card slot is funny when you first use it. It's setup so that you have to push the card in past the case (with a long fingernail or a butter knife) until it clicks. Then it will stay in.I'm very happy with the tablet, small hard disk and all. I'm going to hunt around and see if I can upgrade the small hard disk. Even an extra 20 gigs would be very helpful.
The win 7 feature is not available because win 7 requires XXgb and this tablet has less than 16gb.After taking it to the computer repair shop I was told that it needs to go to AZPEN for repair.I want a refund but neither AZPEN nor AMAZON will tell me how to get credit for the Dual boot system that does not have storage for either system.Buy from MDe la in TX and not from AZPEN.
I purchased this tablet back in Nov 2011. When I got the unit my first duty was to make sure the product was fully updated and while I was doing that I was surprised that I got a warning about the hardrive being full. So I played with the software on the tablet and deleted as much as I could to allow me to add software that I wanted to have. After a few days of doing that I then started looking into the Android side.
la tablet tiene poco espacio en el disco,el win 7 y el android ocupan todo el espacio.gracias, esperando puedan seguir mejorando.att: john garcia
it has not disappointed me yet! The only reason I would regret this purchase is because of the lack of accessories designed to work with it (AKA there is 1 case designed for the Azpen X1, and no additional chargers (such as USB to DC chargers, or in car chargers), and the horrible skyping!
Upon returning I was told (not by the tech person but by the random person I got a hold of) to charge it for a full 24hrs before trying to start it.. I thought that it was odd to have to do that since I used the original one moments after getting it and plugging it in, but I did as they said. 24 hours later the unit still failed to start.
This is about the worse tablet you can buy. Their service is a joke. When I asked for help with mine not working correctly the answer was that it does not have enough memory to run windows and that there was not anything that could be done. To use it in Android mode. Not very satisified. When I wrote them for more help they did not even bother to return my email.
So, once again I contact the manufacturer and after a few days get email back saying they will replace the unit once "I" send the unit back. They didn't give me any info or shipping code etc. I had to pay for it on my own. So I did. After waiting 2 plus weeks I received the new unit and quickly plugged it in to start redoing everything I did on the original unit. Unfortunately it would not even start up..
Over all a good buy, but needs upgrades. I am impressed with the potential that the unit had. Large screen and a very good battery. Good screen color and easy to use.Had issues with the size of the SSD drive. 16GB was not large enough to allow windows 7 and android to really work properly. I was able to get another module SSD 120GB for $150.00 and that made a world of difference.
Answer: I've added 32gb but I would assume a 64gb card would work.