The Adaptec 4000A controller is a
premium, new technology hard disk
controller at an exceptional price!

Includes the following features:

  o  Supports up to 16 heads and 2048
     cylinders (268 Meg/drive).

  o  Supports removable media drives.

  o  Supports wedge servo drives like:
     Syquest, Microscience, and Tulin.

  o  Controls both 5 1/4" and 3 1/2"
     ST506/412 type hard disk drives.
     These can be mixed on the
     controller at the same time.
     (Controls two drives.)

Note:  The 4000A is an MFM controller.
It works with most standard hard disk
drives like those used with the IBM PC.
(You cannot use an IBM PC controller.)