Physical specifications

Width:

• 317 mm (12.7 in) (600 MHz models)
• 323 mm (12.95 in) (700 MHz models)

Depth:

• 267.5 mm (10.7 in) (600 MHz models)
• 262 mm (10.5 in) (700 MHz models)
  

Height:

36.7 mm (1.47 in)in front and 43.3 mm (1.73 in) in the rear

Weight:

• 2.66-kg (5.9-lbs) (Models 1xx , 2xx, and Cxx) with Li-Ion battery pack and weight-saver bezel only
• 2.88-kg (6.4-lbs) (Model 3xx, Jxx) with Li-Ion battery pack and weight-saver bezel only
• 2.75-kg (6.1-lbs) (Model 4xx) with Li-Ion battery pack and weight-saver bezel only (weight is approximate)

Accessories:

• Li-Ion battery pack 325-g (0.72-lbs)
• AC adapter (2-pin or 3-pin)
• Power cord for AC adapter
• CD-ROM drive

NOTE: Actual specifications and weights may vary based on features, vendor components, or manufacturing processes.

Electrical specifications

• Universal AC adapter (72 W), input is 100/240 V AC, 1.5/0.9 A, 50/60 Hz and output is 16 V DC, 4.5 A
• Li-Ion battery pack: 10.8 V, 3.2 AH, 6 cell/pack

Heat dissipation

191 Btu/hr maximum

Heat emissions

56 watts maximum

Air temperature for shipping and storage

-20 degrees to 60 degrees C (-4 degrees to 140 degrees F)

Acoustic noise level: Class 3D (office environment)

• Sound pressure level (operator position): 40 dB (operating)
• Sound power level: 5.1 Bels (operating), 4.8 Bels (idling)

NOTE: The noise emission level stated is the declared (upper limit) sound power level, in Bels, for a random sample of machines, typically configured, and operating in idle mode, for example, powered on, but no DASD read/write or other I/O activity. All measurements made in accordance with ANSI S13.30, and reported in conformance with ISO 9296.

Operating environment

ThinkPad computers are designed, built, and tested for high quality and reliability. When used properly in standard business environments, a ThinkPad system should be a reliable computing asset for many years. However, harsh environments and abuse can damage ThinkPad systems since they are not intended to withstand extreme temperatures, dust, shock, or other severe physical environments. ThinkPad systems should not be used in unsuitable environments. For example, a ThinkPad system should not be used in non-stationary environments, such as in-vehicle installations, without additional casing or shock-dissipation. IBM warrants that the ThinkPad will conform to its Official Published Specifications when used in a suitable physical operating environment.

Air temperature

0 to 8,000 ft:

• Operating: 5 degrees to 35 degrees C (41 degrees to 95 degrees F) (without diskette)
• Operating: 10 degrees to 35 degrees C (50 degrees to 95 degrees F) (with diskette inside unit)
• System off: 5 degrees to 43 degrees C (41 degrees to 110 degrees F)
• Storage/shipment: -20 degrees to 60 degrees C (-4 degrees to 140 degrees F)
• Wet bulb (maximum): 29.4 degrees C (85 degrees F)

8,000 to 10,000 ft:

• Operating: 5 degrees to 31.3 degrees C (41 degrees to 88 degrees F) (without diskette)
• Operating: 10 degrees to 31.3 degrees C (50 degrees to 88 degrees F) (with diskette inside unit)
• System off: 5 degrees to 43 degrees C (41 degrees to 110 degrees F)
• Storage/shipment: -20 degrees to 60 degrees C (-4 degrees to 140 degrees F)
• Wet bulb (maximum): 25.7 degrees C (78 degrees F)

NOTE: The maximum temperature when the system is on is linearly decreased from 8,000 ft to 10,000 ft.

Relative humidity

• Operating: 8% to 95% (without diskette)
• Operating: 8% to 80% (with diskette inside unit)
• Storage/shipment: 5% to 95%

Altitude

10,000 ft maximum (3,048 m)

Agency approvals

System Unit:

• FCC Class-B Certified to comply with FCC Rules, Part 15
• VCCI CLASS B
• CISPR22B
• UL-1950
• CSA C22.2 No. 950
• NOM
• UK-PTT
• JATE
• SASO
• IEC950
• CCIB (for China)
• BCIQ (for Taiwan)
• ACA (Australia)
• RSF449 (New Zealand)
• MPR-II (Sweden)
• CE Mark

Software requirements

The following operating systems support the ThinkPad A21e.

• Microsoft Windows 98 Second Edition
• Microsoft Windows 98
• Microsoft Windows 95
• Microsoft Windows NT Workstation 4.0
• Microsoft Windows NT Workstation 4.0 Japanese
• Microsoft Windows 2000