The left slot will contain the Knulli card, and the right will contain the ROMs. Use at least a 64GB card for Knulli.Installing Knulli on the deviceDownload Knulli for your device from the releases page Flash the firmware to a (new!) SD card (e.g., use BalenaEtcher). Put the SD...
If you are here looking to install PCSX2, you have probably already came to the conclusion that you are okay with emulation and ROMs.