A very old stock PCMCIA Adaptec Card badged by the the Digital Corporation , probably an AHA-1510 or AA-1520/1522, not sure,  It is complete with Adaptec EZ-SCSI installation software on floppy disk.  Software is for Dos and  very early windows.  Supplied with SCSI cable that has a 50 pin SCSI 1 Centronics connector.  See pictures.

If you purchase this we cannot guarantee compatibility with your system.  Sold as a vintage product and unsupported.