Specifications

A.5 System Component Current Requirements

The system has a 350 W power supply. Table A–6 speciﬁes the nominal current

requirements for typical computer components.

Table A–6 Computer Component Current and Power Requirements

Assembly +5 Vdc +12 Vdc -12 Vdc

Total Power

(without surge)

System board (32 MB

memory)

6.0 A 0.06 A 0.06 A 31.4 W

486/50, 256 KB cache 4.7 A 23.5 W

486/33, 128 KB cache 4.2 A 21.0 W

486/25, 128 KB cache 4.0 A 20.0 W

64 MB memory 3.0 A 15 W

3.5-inch diskette

drive

0.8 A 1.00 A 16 W

5.25-inch diskette

drive

0.2 A 0.20 A 3.4 W

Keyboard and mouse 0.5 A 2.5 W

1 EISA slot

2.0 A 0.06 A 0.06 A 11.4 W

8 EISA slots

16 A 0.48 A 0.48 A 91 W

3.5-inch hard drive

1.1 A 0.80 A (2 A surge) 15.1 W

5.25-inch hard drive

(half-height)

1.0 A 1.50 A (4.5 A surge) 23 W

5.25-inch hard drive

(full-height)

1.5 A 2.00 A (4.5 A surge) 31.5 W

Options vary. Typical values are shown.

A–4 System Speciﬁcations