Bought this PC for my elderly mother as an easy to use and non-bulky PC. This model and spec is probably the best overall value as it's the cheapest with an Intel Core chip. I would have been fine paying more for one with an SSD and more RAM, but while other models had more RAM, I didn't see many with an SSD, so I bought this with the intention of upgrading.I am going to include upgrade instructions, BUT PROCEED AT YOUR OWN RISK. You can very easily damage your pc as it doesn't seem like they wanted this all-in-one to be easily serviceable, but it is doable.I upgraded the RAM from 4GB to 16GB which is the maximum per the specs. I paid $109 for 2 x 8GB DDR4 2400Mhz SODIMM laptop memory.I also upgraded to an SSD. This board has an empty M.2 slot for an SSD, so you could keep the hard drive as extra storage as I did. It's hard to find specs for this board but from what I found the slot is and NVMe with SATA compatibility. SATA was historically way cheaper but prices have fallen dramatically so I bought NVMe. Also, I just didn't want to install a SATA SSD and find out it's not compatible so I highly recommend just going with and NVMe drive. I bought an 80mm 500GB M.2 NVMe Samsung 970 EVO for $129. I think this upgrade made the biggest difference. I honestly couldn't tell much a difference upgrading the RAM but with a 7200rpm hard drive the PC was super slow, with the SSD the PC is very quick. Make sure to buy an SSD screw, Samsung doesn't supply one and there wasn't one in the board. They sell them in packs and usually label them as ASUS board compatible m.2 SSD screws. You might be able to find one on an old PC if you have one laying around, but if not you will have to buy one.I don't believe there is a youtube tutorial yet so it was a little trial and error. First on the bottom you'll see were the stand poles go into the PC, there are little covers that you can pop off with a Phillips and it exposes a screw on each set of stand poles. Unscrew and pop off the middle cover and the stand slides out.Next that exposes three screws that you can take out. Then flip the pc to where the monitor is facing up. The long speaker grill that goes the whole width of the bottom of the pc pops off. I used a credit card to wedge in and slide across.With the speaker grill off you can see more screws. Remove all the screws attached to the while plastic trim - which is attached to the screen. With those screws removed you can now pop the screen off. This is the tricky part and takes patience and a lot of control of your strength as you need to put in more effort than you would think but not too much as to break anything. Start with the credit card and wedge it in at the bottom of the screen where in the exposed opening from where you removed the grill, the clips are deep near the back of the monitor so you have to wedge the card in pretty deep - like about 2 centimeters. After you pry the first clip keep going all the way around. The clips on the top of the screen are really close to the front of the monitor so they are easy to undo, but getting that first corner is tough.After you undo all the clips - CAREFULLY - lift the screen off from the back taking the time to keep any eye on cables. There are a lot of cables connecting one side to the other and there is plenty of length to separate but they are routed in a certain way that you can very easily pull one or more out.With the two sides split apart it's pretty easy to see the slot for the memory - there are two slots and one is occupied with a 4GB chip. Pop the tabs on the side and tilt out. Put the new one in pins side first and make sure it's seated.The M.2 slot is slightly hidden under a cable harness. At first I saw a slot labeled M.2 that was easily visible but it was at the edge of the board and didn't have any room for an 80mm SSD, so I looked around and saw the other slot kind of tucked under a cable harness. The SSD slides right in. There is not a screw on the board so you will need to buy or find a screw to screw down the SSD.Now you can put everything back together - carefully. Make sure you didn't tug on any cable. I must have because after I put everything together my screen was half dark, so I opened it back up and secured the ribbon cable for the screen and that seemed to work.With everything back start the computer. The pc will automatically recognize the RAM, but it will not recognize the SSD. You will have to initialize it by:Click on the windows button and "X" at the same time. A menu will pop up, select disk management. The disk manager might see a new disk and ask you if you want to format it, if not you can right click on the new disk and format. I just used the suggested default settings and seemed to work fine. After formatting, use the migration software for your disk. I went to samsung's website and downloaded migration software and it's dead easy to use. Just follow the instructions and it will see the new disk you just formatted and will migrate your system drive contents to the new drive. After you're done it will ask to restart and it will say you need to remove the old drive and let it start with the new drive. I didn't want to go through opening up the case again so I just left both drives in - however it will require some more steps.When you restart you need to press "ESC" to go into the boot options. From there I believe F10 takes you to the boot menu. Navigate to the drive menu and change the boot order from the 1TB hard drive to the new drive as the first. Save your settings and restart. However, YMMV after I did this the system restarted with the old hard drive. You can verify this by going into my computer on the File Explorer and looking to see you C: drive. If it's 1TB then you're still on the old drive. You can also tell because it takes forever to boot from the old hard drive. If this happens to you open the Disk Management again through the windows button "X" key press. You may see your new drive is "offline" due to some error about a conflict with another identical drive or something to that effect. Just right click on that drive and choose "online" to bring it online. The system automatically will make the changes it needs to bring it online again. Now reboot. After rebooting make sure you can see both drives in file explorer. If it looks fine, reboot again and change the boot order from the boot menu. This time it should boot from the new SSD and it's very quick and silent.With the SSD the pc is super fast and I don't foresee a need for any other upgrades for a long time - granted for a casual pc user. If you're a gamer, forget about an all-in-one.