This is a full-fledged SCSI interface for your Ensoniq ASR-10. Fully compatible, plus has one special feature: it supplies termination power to the SCSI buss, thus enabling external units such as ZuluSCSI to not require external power.
Comes with all hardware and installation instructions. No soldering or drilling required.
Works with both the ASR-10 and ASR-88 (not the ASR-X, which is different altogether).