If you want some more flexibility when it comes to loading your SD card into your Ender 3 or Ender 3 Pro Printer, check out this SD card extension cable sold directly by the manufacturer. It's easy to install and use, but one reviewer on Creality's website recommends 3D printing a case to make it easier to insert the micro SD card. Let's face it, micro SD cards are tiny, which can make you feel like you’re playing a game of Operation every time you want to start a new print.
As you'll see in 3D printable mods and upgrades later on in the list, there are other DIY approaches you can take as well. However, if you want to spend a few bucks for an official SD card upgrade, this SD Card extension cable might be exactly what you need.