Laptop Drives IDE 9.5mm 80GB 2.5in 4200rpm Military Grade, Extreme Environment Tolerant -30C to +85 Rugged Automotive , Industrial N4K100 used in Lexus..
Hitachi 9.5mm 30GB 2.5in. 4200rpm HEJ423030F9AT00 EnduraStar J4k30 -20C to +85C Automotive and Rough Environment Tolerant same as ST930818SM , Mobile and Outdoor, Rough Environment tolerant Industrial Control Aircraft / Navigation marine, Defence..