I got this MBA in 2014 not too long after a refresh I think. It's labeled as early 2014, 1.4GHz, 4GB of RAM, 128GB SSD. Back then it was perfect because I had used a $250 Gateway notebook in my classes at times, though never to take notes. It was a heavy SOB. As I started to use my computer more for class stuff, I decided that I needed a damn Mac to benefit from everything on my iMac, iPad and iPhone. So the 128GB seemed fine back then. But now I'm trying to install some Geographic Information Systems software because I'm helping on a project this summer -- may or may not need it -- and then taking a GIS class in the fall. I'm pretty sure GIS software is going to be big in the line of work I choose -- environmental geology -- so I'd love any chance I get to learn it. I have found a free version of of similar GIS software, but let me tell you that it seems in the science world that I'm going to run into a lot of PC stuff. So to get to the point, I installed Parallels on my MBA, which only took up 600MB. But then I got Windows 10, which I think is about 15GB. The only way I had at the time to install it was a 500GB external HDD, so I did that. Disk works fine as it always has, but it's another thing to carry, requires obviously plugging in when needed to use and isn't going to be as fast as onboard flash. I read elsewhere about the battery and heat issues with OWC's Aura drives, so that killed my fantasy of a 1TB MacBook Air. I'm also worried about any messing around in a computer after killing my iMac's display adapter after swapping out hard drives for about the sixth time thanks to "oh, so there's a different connector based on which brand drive you get? F@#%!" and then the new drive DYING A YEAR LATER. I bought an external monitor for a $150 solution. There is no such solution if I mess this computer up, and it's not 5 years old like the iMac. iFixit has instructions that make it look easier -- not dealing with a giant display or as many connectors inside -- but the hard drives they sell are $350 for a used 258GB SSD. GAH. So I'd just like to know if I'm uninformed of some awesome way to upgrade this thing. I've thought about finding a better external drive. I looked into using a USB flash drive or SD card, but the standard ones are hella slow and I don't think the better ones are even up to snuff compared to an external spinner. Also I have the external spinner so no cost for it vs. I think $80 for what was basically a USB 3.0 SSD. I know I wrote a lot, but that's what I do. Thanks for any help.