Cable Adapter Features:UNIVERSAL COMPATIBILITY: Works seamlessly with multiple Twin Famicom models, including the AN-505-RD, AN-505-BK, AN-505B and AN-505R. Designed to connect your FDS driven emulator with these classic consoles. ENHANCED DURABILITY: The cable's cores are wrapped in a high-quality braided jacket for superior abrasion, stretch and kink resistance. FDSKey Hot-Plug Support: Our cables support FDSKey Hot-Plug, a feature that ensures a seamless gaming experience that keeps the action uninterrupted. Game Progress Saving: Enhance your gaming experience with the ability to save your game progress. Our cable implements this important feature, allowing you to pause your adventure and continue where you left off, making it a must-have for any serious gamer. For FDSKey introduction: For FDSKey is an easy-to-use Famicom home console emulator based on an open source project with a feature-rich OLED screen feature: Plug and play, hot-swap support completely replaces physical disk drives Write to physical disk and dump physical disk Support firmware upgrade and save game progress Comes with 4GB TF memory card, contains more than 300 games Micro-sd supports FAT, FAT32, exFAT file systems, and can add Famicom games (.fds files). Multifunctional OLED screen, the main menu includes functions such as browsing disk images, creating blank disks, settings, etc.Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Notes: While the game is writing some data to the virtual disk (saving game progress), do not power off the Famicom until the updated ROM has been saved to the SD card. Wait a moment Second or eject virtual disk (left button). A save message will be displayed, do not turn off the power while this message is visible.<br /