This is the current release of SCO Xenix 386GT. (Version 2.3.2f). This version is the same as the 386AT version except that it supports SCSI and hi-performance ESDI controllers. If you have a current release of Xenix 386 you only need to get the N series disks. The B disks are v 2.3.2c and the X disks are 2.3.2b and the game disk is 2.3.0a. SN:sco005048 AK:cdpbrmgu