The Roland SCSI CD Burners that were made and serviced by QPS have all been discontinued. However, a QPS CD burner enclosure is required if you would like to burn an audio CD. The best place to find these drives would be the used market (e.g. eBay, Craig's List, etc). The CD drives that were compatible were the VS-CDR I, VS-CDR II or the VS-CDR III--which could have contained different drive mechanisms inside depending on when it was manufactured. You may also view the VS-Series Compatibility Guide at the link below. Note: this guide was written during the VS recorder's time of production years ago and manufacturers may no longer have these products available or their specifications may have changed:
Note: The SCSI port on the back panel is designed to connect to external drives and cannot be used to connect to a computer.