The following table lists the environmental specifications for the CD-RW drive. You can mount the drive vertically or horizontally.

Environmental requirements

Environmental Requirements:

Specification

Operational

Nonoperational

Temperature (noncondensing)

+5° C to +45° C

-40° C to +60° C

 

(+41° F to +113° F)

(-40° F to + 140° F)

 

 

 

Relative humidity

8% to 80%

5% to 90%

(noncondensing)

 

 

Write/Read speeds

The following table lists the write/read speeds for the CD-RW drive.

Drive Write/Read Speeds:

Function

Supported Speed

Read (CD-ROM/CD-R disc)

17-40x

(CAV)

 

 

 

Read (CD-RW/Audio disc)

14-32x

(CAV)

 

 

 

Write (CD-R disc)

17-40x

(PCAV)

 

 

Write (CD-RW disc)

4x, 10x, 12x

Media Speed Compatibility

The following table lists the media speed compatibility for the CD-RW drive.

Function

CD-R Media Compatibility

CD-RW Media

 

 

Compatibility

 

 

 

Reads

ALL

ALL

 

 

 

Writes

4x, 8x, 12x, 16x, 24x, 32x, 40x

Multispeed (1x2x4x, 4x,

 

 

1x-4x)

 

 

High Speed

Note: Media or drive speed must support the listed write speed of the media.

Drive-performance specifications

The following table lists the performance specifications of the CD-RW drive.

Drive performance:

Feature

Specification

Burst data transfer rate

16.7 MB (1 MB is approximately 1 000

 

000 bytes of data) per second (ATA PIO

 

Mode 4) 16.7 MB per second (ATA

 

multi-word DMA Mode 2), 33.3 MB per

 

second (Ultra DMA Mode 2)

 

 

Average access time (including latency)

100 ms (17-40x, CAV)

 

 

Cache memory (Read/Write)

2 MB

1640X/12X/40X Max CD-RW Drive: User’s Guide

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IBM 22P6979 Environmental requirements, Write/Read speeds, Media Speed Compatibility, Drive-performance specifications