This is the ExpressCard flash memory HEX-S2G from Hagihara Syscom, likely a product from around 2006. I used it with a PC equipped with ExpressCard functionality for Windows Vista's ReadyBoost feature. ◯ Contents: ・Flash memory unit (2GB) ※ No box included ◯ Notes: ・This flash memory is approximately 20 years old. ・I cannot confirm if it works as I don't have an environment to test it. ・It has been stored in a box in a closet for 20 years. ・It will be shipped via Nekopos (Japanese postal service) in an envelope. ・The box is from a different model used for storage ※ This item is 2GB.