• Make sure your SD card is formatted in FAT (FAT16) format; otherwise, it won’t be detected.
• Compatible with SD cards up to 2GB (max capaticy). It's best to use a low-speed SD card. If the card isn’t recognized, it might be larger than 2GB or a high-speed SDHC type. Please ensure you use the correct SD card, preferably the original one.
• Avoid pressing the FOR GBA microswitch when inserting the card. Works for GBA/SP/GBM/IDS/NDS/NDSL for Gameboy. Once inserted, the menu will appear on the screen.
• For best performance, use a reliable SD card brand, such as for PNY. This device supports GB, GBA, and NES files through emulation (except for GBA, which runs natively).
• Important: Avoid playing games or switching the SD card while the device is powered on, as this may harm the SD card. Always recharge after use to prevent damage. Mini SD does not use the card directly, you must convert files before playing.