This AppleCD 600i CD-ROM drive is a reliable and efficient addition to your vintage computing setup. It has been tested and is in proper working condition, ensuring that you can use it with confidence. The unit is a SCSI 50pin CD-ROM drive designed for use with Apple Mac Macintosh computers. Additionally, it was manufactured in Japan and is of vintage quality. This unit is sold individually and will make a great addition to your vintage computing collection.