This memory card does still work. It is not cleared so there are still saved games on the memory card.

The Official Nintendo GameCube Black Memory Card 251 Blocks (DOL-014) is a genuine OEM product manufactured in Japan by Nintendo. This external attachment memory card is specifically designed for the Nintendo GameCube console, with a storage capacity of 251 blocks. The black color ensures compatibility with the console and other memory cards, making it a reliable and authentic accessory for enhancing your gaming experience.