This is an Orinoco Classic Gold PC Card. I used it about 15 years ago with a PowerBook 5300. That model had a cheap feel, with the LCD screen attached with double-sided tape. Furthermore, since this 5300 didn't support AirMac cards, this was one of the only wireless LAN cards available at the time. I believe the OS was 8.x. I am selling this because my MacBook was completely destroyed by vinegar a few years ago. Currently, the operation has not been confirmed. Due to its communication speed and only supporting WEP, it is considered to be of no practical use today, but perhaps it could be displayed as a commemorative item. I cannot guarantee its operation if used as a practical item. Please purchase only if you understand the above. Immediate purchase is welcome. Thank you for looking.