Turbo XT Clone at 12Mhz (NEC V20 CPU)
640K RAM
Amber mono monitor 12"
Dual 5.25" Half-height floppy drives (Mitsumi)
Monochrome video card
101 Keyboard
MS-DOS 3.3
Yikes. My first upgrade to it, and what brought me into the world of building and repairing PC's was to add a Kalok MFM 20Megabyte HDD. For you younger guys--MFM stands for Modified Frequency Modulation, and there were three other competing standards at the time:
RLL, or Run Length Limited
ESDI, or Enhanced Storage Device Interface (I think...been a while)
SCSI (still with us, obviously)
Shortly thereafter, MFM was incorporated into the IDE scheme. Controller was then put onto the drive. Previously, the controller was seperate from the harddisk, as is the case with SCSI drives still.