Compaq 305 specifications Diskette Drive

Presario 305 Model

Before You Begin	Specifications	Parts Catalog
Removal Sequence	Troubleshooting	Battery Operations
		Index
Product Description	Pin Assignments

Specifications (continued)

CD drive
Physical and environmental	System Interrupts	System DMA
System I/O Address	System Memory Catalog	Display
Diskette drive	Hard drive
	Battery pack

Diskette Drive

Diskette Size

Light

Height

Bytes per Sector

Sectors per Track High Density

Low Density

Tracks per Side

High Density

Low Density

Read/Write Heads

Access Times

Track-to-Track (high/low)

Average (high/low)

Settling Time

Latency Average

Energy

Voltage

Amp-hour capacity

Watt-hour capacity

Temperature

Operating

Non-operating

3.5 inch On drive

0.55 in (1.40 cm)

512

18 (1.44 MB)/15

(1.2MB)

9

80 (1.44 MB)/80

(1.2MB)

80

2

3 ms/6 ms

94 ms/174 ms

15ms

100 ms

14.4V

2.8Ah

27 Wh

41 to 95°F/5 to 35 °C -22 to 140°F/-30 to 60 °C

Hard Drive

Formatted Capacity per Drive (GB)

Logical Configuration Cylinders

Heads

Sectors per track

Bytes per sector

Typical Seek Times, ms (including settling) Single track

Average Full stroke Rotational speed

Transfer Rate

Operating Temperature

4.3GB

4.3GB2

8955

4

N/A

512

N/A

4 ms

13 ms (read)

23ms

4,009 rpm

33.3MB/s

41 to 131°F/5 to 55 °C

DVD Drive

Applicable CD-ROM (Mode 1, 2, and 3)

Disc CD-XA ready (Mode 2, Form 1 and Form 2) CD-I ready (Mode 2, Form 1 and Form 2) CD-R (ready only)

CD Plus

Photo CD (single/multisession) CD Extra

Video CD

CD-WO (fixed packets only) CD-Bridge

Center Hole	.59 in/15 mm
Diameter
Disc	12 cm, 8 cm
Diameter
Disc	1.2 mm
Thickness
Track Pitch	1.6 um
Capacity	Mode 1, 12
	Mode 2, 12 cm
	8 cm
Laser	Beam Divergence
	Output Power
	Type
	Wave Length

550MB

640MB

180MB

53.5±">1.5 degrees

0.24± 0.1 mw

Semiconducter Laser GaA1As 780 nm ± 25 nm

Access Time	Random	< 150 ms
	Full Stroke	< 300 ms
Audio Output	Line out	0.7 V rms
Level	Headphone	none
Cache Buffer	128 KB
Data	24x	150 KB/sec
Transfer	Variable	1500 to 3600 KB/sec
Rate	Normal PIO Mode 4 (single	16.6 MB/sec
(Sustained)	burst)	< 8.3 seconds
	Startup time
	Stop time	< 4.0 seconds

Lithium Ion (Li Ion) Battery Pack

Dimensions

Height

Length

Weight

Cells

Energy

Voltage Amp-hour capacity Watt-hour capacity

Environmental Requirements Operating Temperature Non-operating Temperature

U.S.	Metric
0.9 in	2.3 cm
10.47 in	26.6 cm
0.48 lb	0.21 kg

4 Li-Ion

14.4V

2.8Ah 27 Wh

41° to 95°	F	5° to 35°	C
-22° to 140°	F	-30° to 60°	C