1-18  Chapter 1, Operating and  
  Performance Specifications
1.17 300-/600-MEGABYTE FIXED DISK DRIVE EXPANSION UNIT
Dimensions: 
Height: 
Depth: 
Width:
  6.4 in. (16.1 cm) 
16.5 in. (41.9 cm) 
14.5 in. (35.9 cm)
Weight:
One Drive, 300-Megabyte unit:
Two Drives, 300-Megabyte units, mirrored:
27.5 lb (12.4 kg) 
35.5 lb (15.9 kg)
Environmental Requirements:
Temperature
Operating:
Nonoperating:
Shipping (adequately packed):
Humidity:
Operating:
Nonoperating:
Not less than 50˚F or more than 104˚F (10˚C to 40˚C) 
Not less than 50˚F or more than 104˚F (10˚C to 40˚C) 
Not less than - 22˚F or more than 140˚F (- 30˚C to 60˚C)
Not less than 20% or more than 80% (noncondensing) 
Not less than 5% or more than 90% (noncondensing)
Controller: 1:1 interleave Buffered ESDI External Fixed Disk Drive 
Controller Board installs in one 8-/16-bit expansion slot in the 
system unit.
Interface Board: Internal ESDI interface board supports one or two 
300-Megabyte Fixed Disk Drives.
LED Indicator: Green
Power Requirements:
Nominal Line Voltage: 
Range, Line Voltage: 
Range, Line Frequency: 
Power:
Steady State:
Peak Power:
U.S. 
120 VAC, 60 Hz 
102 to 132 VAC 
47 to 63 Hz
192 watts
220 watts
International 
230 VAC, 50 Hz 
204 to 264 VAC 
47 to 63 Hz
Current: (fuse rating) 5A (U.S.) 4A (International)
Power Cable:
Length:
Type:
Interface:
60 in (1.52 m)
44-Lead twisted pair
44-Pin Subminiature D-Shell
Signal Cable:
Length:
Type:
Connectors:
60 in (1.52 m)
44-Lead twisted pair
44-Pin Subminiature D-Shell
Addendum 108431-001 (11-88) to 
Manual No. 108033-003