"Cromemco CS250"
Hard disk drive from a 1991 vintage "Super Microcomputer".
Model No#: CS250RH190XX40E-NG
Cromemco 900-0546
SN 90546G0173 
NSN 4920-01-304-4098
 CAGE 81755 ASSY 16U9500-45
 CAGE 81755 ASSY 16U9500-25
MSN 208802

This S-100 computer was assembled & tested by Lockheed Martin Corp. in April of 1991.
Sold to General Dynamics in Fort Worth, Texas ~ for F-16 fighter-jet mission support.
The hard disk drive is formatted, partitioned and configured with UNIX V and Cromix Plus.

"Maxtor XT2190"
Becoming rarer by the day ...this unit is still NEW (never used) as of 15Feb2008.
MFM, ST-506 standard, internal 190MB hard drive. 
"Maxtor" is engraved into the cover / activity LED.
Bad-sector mappings.
Control-circuits  (most recent date codes, on the IC's = 18th week of 1990). 
Oblique view.
Power & ST-506 connectors.
ID tag.
Detail of ID tag and signal & power connectors.

Copyright 2008-2016 ~ TechniQ U.S. Associates LLC & Robert C. Kuhmann
All Rights Reserved (All WRONGS avenged).