Reddit mentions of Samsung 860 EVO MZ-76E500E 500 GB Solid State Drive - SATA (SATA/600) - 2.5" Drive - Internal - 550 MB/s Maximum Read Transfer Rate - 520 MB/s Maximum Write Transfer Rate - 256-bit Encryption Standard

As for the RAM:

The Mac mini 2011 supports up to 16 GB RAM (2 x 8 GB RAM modules). It has two RAM slots, meaning two RAM modules in total will fit in. A higher total amount than 16 GB RAM won't work due to a limitation in the logic board.

The Mac mini 2011 needs RAM that matches the following specification:

PC3-10600 DDR3 1333 MHz, 204-pin

Here are some examples of RAM modules that work flawlessly in the Mac mini:

• https://www.amazon.com/Corsair-Certified-Laptop-Memory-CMSA16GX3M2A1333C9/dp/B006ON5KZC/
  
• https://www.amazon.com/Timetec-1333MHz-PC3-10600-Upgrade-21-5-inch/dp/B00SNM1LHS/
  
• https://www.amazon.com/SAMSUNG-10600-SODIMM-LAPTOP-MEMORY/dp/B0067GGPXC/
  
• https://www.amazon.com/Patriot-SODIMM-204-Pin-SO-DIMM-PSA316G1333SK/dp/B006BMBUAA/
  
  You may find information online which states that your Mac Mini 2011 only supports up to 8 GB RAM (2 x 4 GB RAM modules), but this is outdated information! As 8 GB RAM modules were not commonly available back in 2012, Apple could only test with 2 x 4 GB RAM = 8 GB RAM. When 8 GB RAM modules became available, users found out that the actual maximum RAM capacity this machine supports is 16 GB RAM, this is also being confirmed by the Amazon reviews of the modules I suggested. Apple never went back to update their info, so the wrong 8 GB RAM figure still swirls around.
  
  Before you upgrade the RAM, check how much RAM is already inside of the machine via the Apple menu at the top left corner of the screen -> "About This Mac".
  
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  As for the SSD:
  
  Your Mac mini 2011 supports any SSD that matches the following requirements:
  
  
• 2.5" form factor
  
• SATA3-compatible
  
  Here are some examples of such SSDs:
  
  
• https://www.amazon.com/Samsung-860-EVO-500GB-SSD/dp/B07937HDJM/
  
• https://www.amazon.com/SanDisk-Ultra-Solid-State-SDSSDH3-2TOO-G25/dp/B071KGRXRH/
  
• https://www.amazon.com/Crucial-MX500-500GB-NAND-Internal/dp/B0784SLQM6/
  
• https://www.amazon.com/Blue-NAND-500GB-SSD-WDS500G2B0A/dp/B073SBZ8YH/
  
  Choose a capacity that meets your needs. If you want to keep any of the data that is currently stored on your HDD, I suggest you create a Time Machine backup to some external drive. Once the SSD is in, macOS can be restored via Internet Recovery:
  
  
• http://osxdaily.com/2018/10/10/how-reinstall-macos-mojave/
  
  Once macOS is reinstalled, you will be asked whether or not you want to restore from a Time Machine backup during the setup procedure.
  
  -----
  
  This video shows you both the RAM and SSD upgrade procedure, but the iFixit text guide /u/mayhem-8 has linked to is also very good:
  
  
• https://www.youtube.com/watch?v=ymGnXdwvabg

Hello! Currently, I have an ASUS X556UV-XX280T which has some years of use on it. I added a 240GB SSD but somehow it died. I have never had an SSD before but I don't think they last less than 90 days, so now that I want to buy another one, I'm debating whether I should buy one of the same (or ask for warranty to Kingston), or if either this one or this other would both fit and last longer. Could you help me pick one? I intended to get one for some games and to accelerate my PC (I found out the current HDD is really slow, tested everything) but now I intend to have it as main for everything as well as later migrate to a PC and if it somehow is able to work for a PC too, then that would be awesome though not needed.