This adapter is perfect for vintage Apple enthusiasts looking to connect their Macintosh PowerBook to SCSI peripherals. The HDI-30 to Centronics 50 Male Adapter is compatible with Apple products and is ideal for those with SCSI peripherals that require Centronics 50 connections. This product is perfect for those who are looking to expand their collection of vintage computer accessories and parts. The adapter is in great working order and has been tested to ensure optimal performance.