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  • Installation
    '''{{ThinkPad|T20|Installation instructions for the}}''' '''{{ThinkPad|T21|Installation instructions for the}}'''
    8 KB (1,090 words) - 00:35, 22 May 2013
  • Known Problems
    ...m/viewtopic.php?t=59577 Problem with faulty voltage regulators] (A2x, T20, T21, T22) ...failing memory slot|Problem with loose solder joints on a RAM slot]] (T20, T21, T30, X3x)
    8 KB (1,181 words) - 20:34, 24 March 2020
  • How to install the IBM Ultracam II driver
    ...ory:A22e]] [[Category:A22m]] [[Category:A22p]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:X20]] [[Category:X21]] [[Cat
    2 KB (365 words) - 23:28, 21 January 2009
  • ThinkPad History
    | {{T20}} || May 2000 || [[Image:Icon20_thinkpoint.png | TrackPoint]] [[Image:Icon2 | {{T21}} || Oct 2000 || [[Image:Icon20_thinkpoint.png | TrackPoint]] [[Image:Icon2
    115 KB (14,198 words) - 09:45, 1 May 2022
  • Savage
    [[Category:Drivers]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:A22e]]
    2 KB (299 words) - 22:43, 27 February 2007
  • IrDA
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}
    3 KB (355 words) - 14:24, 22 November 2020
  • How to get special keys to work
    On the ThinkPad {{600}}, {{T20}}, {{T21}}, {{T22}}, {{T30}}, {{X20}}, {{X21}}, {{X31}}, {{X40}}, {{T42p}}, {{T43}}
    44 KB (6,541 words) - 03:13, 15 February 2016
  • How to get SpeedStep working on Coppermine-piix4-smi based ThinkPads
    ...Pads known to have this configuration are the {{X20}}, {{X21}}, {{T20}}, {{T21}}, {{T22}}, {{TransNote}} and possibly {{A20m}}, {{A20p}}, {{A21e}}, {{A21p
    4 KB (550 words) - 10:44, 8 July 2010
  • Ultrabay
    ...}, {{A31}}{{footnote|6}}, {{A31p}}{{footnote|6}}, {{T20}}{{footnote|6}}, {{T21}}, {{T22}} || {{ThinkPad Dock}}{{footnote|3}} {{footnote|4}}, {{ThinkPad Do
    17 KB (2,246 words) - 17:07, 22 January 2021
  • UltraPort
    First introduced in the {{T20}}, the UltraPort is a proprietary USB 1.1 port found installed in-between t *{{T20}}, {{T21}}, {{T22}}, {{T23}}
    4 KB (526 words) - 17:06, 22 January 2021
  • ThinkLight
    *{{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}
    7 KB (983 words) - 17:05, 22 January 2021
  • How to make APM work
    ...ndrake has been better than Redhat, Fedora, and Debian generally with e.g. T20, 600X and 240X in providing sleep but no blank or hibernation with 2.4 and *On at least the {{T20}} APM hibernate won't work if the laptop is on AC power -- Fn-F12 will just
    5 KB (848 words) - 13:12, 21 December 2019
  • How to make ACPI work
    *ThinkPad {{T20}} and {{T21}} have old ACPI implementations, but there have been some reports of using
    8 KB (1,261 words) - 03:24, 28 October 2015
  • Intel 440BX
    * {{T20}}, {{T21}}, {{T22}}
    2 KB (235 words) - 16:00, 22 January 2021
  • How to make use of Dynamic Frequency Scaling
    ...owered environments on AMD64 (but may not work on older ThinkPads like the T21). Ondemand may not work on older laptops without Enhanced SpeedStep due to ...egory:R52]] [[Category:R60]] [[Category:R60e]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:T30]] [[Category:T40]] [[Cat
    13 KB (1,937 words) - 20:20, 10 February 2011
  • Problem with high pitch noises
    *{{T21}} *{{T20}}
    22 KB (3,464 words) - 04:09, 22 January 2014
  • Problem with video related system lockup
    *ThinkPad {{T20}}, {{T21}}, {{T22}}, {{T23}}
    2 KB (291 words) - 19:59, 2 December 2006
  • APM vs. ACPI
    *[[:Category:T20 | T20]] *[[:Category:T21 | T21]]
    60 KB (6,663 words) - 21:24, 7 December 2007
  • Problem with black X
    [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]]
    2 KB (234 words) - 13:00, 24 July 2005
  • ThinkPad Dock II
    * Compatibility: X20/30, T20/30/40, R50/R51 and A20/30 Series notebooks.(does not support the A21e/22e, * {{T20}}, {{T21}}, {{T22}}, {{T23}}
    13 KB (2,042 words) - 17:18, 6 April 2014
  • ThinkPad Port Replicator II
    * {{T20}}{{footnote|1}}, {{T21}}{{footnote|1}}, {{T22}}{{footnote|1}}, {{T23}}{{footnote|1}}, {{T30}}, {{T
    4 KB (561 words) - 15:42, 15 October 2020
  • ThinkPad Mini-Dock
    * {{T20}}{{footnote|1}}, {{T21}}{{footnote|1}}, {{T22}}{{footnote|1}}, {{T23}}{{footnote|1}}, {{T30}}, {{T
    4 KB (586 words) - 15:04, 15 October 2020
  • ThinkPad Port Replicator
    * {{T20}}{{footnote|1}}, {{T21}}{{footnote|1}}, {{T22}}{{footnote|1}}, {{T23}}{{footnote|1}}, {{T30}}
    4 KB (526 words) - 14:58, 15 October 2020
  • ThinkPad Dock
    * {{T20}}{{footnote|1}}, {{T21}}{{footnote|1}}, {{T22}}{{footnote|1}}, {{T23}}{{footnote|1}}, {{T30}}
    5 KB (730 words) - 15:08, 15 October 2020
  • Installation instructions for the ThinkPad T20
    Specific installation notes for the ThinkPad {{T20}}. *{{Install|Debian||T20}}
    331 bytes (43 words) - 02:58, 31 October 2006
  • Mini-PCI Modem card
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}
    2 KB (216 words) - 14:14, 13 April 2020
  • Intel 10/100 Ethernet Mini-PCI Adapter with 56K Modem
    * {{T20}}, {{T21}}, {{T22}}
    2 KB (217 words) - 15:48, 15 November 2020
  • 3Com 10/100 Ethernet Mini-PCI Adapter with 56K Modem
    * {{T20}}, {{T21}}, {{T22}}
    3 KB (400 words) - 15:43, 15 November 2020
  • How to configure acpid
    ...egory:R50p]] [[Category:R51]] [[Category:R52]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:T30]] [[Category:T40]] [[Cat
    10 KB (1,527 words) - 16:49, 19 September 2010
  • Problems with ACPI suspend-to-ram
    ...fected models: {{T20}}, {{T21}} (at least [[2648-46U]] (T20),[[2647-8AG]] (T21)).
    12 KB (1,983 words) - 15:06, 7 October 2010
  • Problem with 3Com 10/100 Ethernet card not being recognized
    * {{T20}}, {{T21}}, {{T22}} ...oup.com/?l=linux-kernel&m=112247477326714&q=raw that fixed this issue on a T21 using Linux 2.6.13-rc5 - Thanks John!
    4 KB (583 words) - 14:36, 27 February 2006
  • ThinkPad Button
    *{{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    10 KB (1,471 words) - 17:05, 22 January 2021
  • S3 Savage IX8
    This happened on a T20 running Debian Etch and Lenny. * {{T20}}, {{T21}}, {{T22}}
    6 KB (1,009 words) - 15:00, 22 January 2021
  • CS4297
    * {{T20}}, {{T21}}, {{T22}}
    1,008 bytes (137 words) - 15:20, 15 November 2020
  • CS4624
    * {{T20}}, {{T21}}, {{T22}}
    2 KB (370 words) - 15:18, 15 November 2020
  • UltraPort Camera & UltraPort Camera II
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}
    2 KB (330 words) - 16:38, 22 January 2021
  • UltraPort Compact Flash Adapter
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}
    3 KB (514 words) - 16:38, 22 January 2021
  • UltraPort Bluetooth Adapter
    * {{T20}}{{footnote|2}}, {{T21}}{{footnote|2}}, {{T22}}{{footnote|2}}, {{T23}}{{footnote|2}}
    2 KB (223 words) - 16:55, 22 January 2021
  • UltraPort Infrared Adapter
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}
    3 KB (398 words) - 16:37, 22 January 2021
  • UltraPort Digital Array Microphone
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}
    1 KB (149 words) - 16:38, 22 January 2021
  • Installation instructions for the ThinkPad T22
    ...similar models, so pages like [[Installation instructions for the ThinkPad T20]] may also be helpful. ...into X Windows. Please see [[Installation instructions for the ThinkPad T21]].
    550 bytes (79 words) - 19:42, 13 December 2008
  • Intel Mobile Pentium III
    ...|| 100 || 1.60 || 1.35 || 27.5 || 16.1 || {{A21p}}, {{A22e}}, {{A22m}}, {{T21}} | 800 || 650 || 100 || 1.60 || 1.35 || 25.9 || 15.1 || {{A21m}}, {{A22m}}, {{T21}}, {{T22}}
    3 KB (369 words) - 16:53, 22 January 2021
  • Ultrabay 2000 Enhanced Drive Adapter
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    2 KB (217 words) - 16:19, 11 November 2020
  • Ultrabay 2000 Slim Drive Adapter
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    2 KB (206 words) - 16:20, 11 November 2020
  • Buyers Guide
    | {{T20}}, {{T21}}, {{T22}} || Many models have a problem of gradually dying. Attempting to
    11 KB (1,736 words) - 00:01, 2 September 2014
  • Maintenance
    Transnote, T20, T21, T22, T23, T30, T40, T40p, T41, T41p, T42, T42p, X20, X21, X22, X23, X24, X ...n or 14 pin eeproms. Locate the eeprom first according to your model (E.g. T20-23 and T30 have the eeprom underneath TP, and can be accessed by removing t
    20 KB (3,378 words) - 20:49, 18 February 2016
  • Ultrabay 2000 Battery
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    2 KB (212 words) - 15:41, 11 November 2020
  • Ultrabay 2000 HDD Adapter
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    1 KB (198 words) - 20:43, 12 October 2020
  • Ultrabay 2000 SuperDisk LS-120 Drive
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    1 KB (150 words) - 15:32, 13 October 2020
  • Ultrabay 2000 SuperDisk LS-240 Drive
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    1 KB (151 words) - 15:32, 13 October 2020
  • Ultrabay 2000 DVD Multi-Burner
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    2 KB (340 words) - 20:45, 13 October 2020
  • Ultrabay 2000 2x SuperDisk LS-120 Drive
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    1 KB (181 words) - 15:32, 13 October 2020
  • Ultrabay 2000 Floppy Drive
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    2 KB (227 words) - 20:39, 12 October 2020
  • Ultrabay 2000 CD-ROM Drive
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    1 KB (161 words) - 17:08, 13 October 2020
  • Ultrabay 2000 Zip 250 Drive
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    1 KB (141 words) - 15:49, 13 October 2020
  • NS PC97338
    * {{T20}}, {{T21}}, {{T22}}
    2 KB (221 words) - 16:10, 22 January 2021
  • Floppy
    *ThinkPad {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    4 KB (512 words) - 22:23, 20 December 2012
  • Supported Boot Devices
    *[[:Category:T20 | T20]] *[[:Category:T21 | T21]]
    54 KB (6,098 words) - 02:34, 7 March 2020
  • CardBus slot
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}
    4 KB (564 words) - 16:04, 15 November 2020
  • MiniPCI slot
    *{{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}
    4 KB (524 words) - 16:01, 15 November 2020
  • ThinkPad Monitor Stand 2000
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    870 bytes (108 words) - 10:43, 6 October 2020
  • ThinkPad Monitor Stand 2001
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}
    1 KB (140 words) - 10:43, 6 October 2020
  • How to reduce power consumption
    ...egory:R52]] [[Category:R60]] [[Category:R60e]] [[Category:T20]] [[Category:T21]] [[Category:T22]] [[Category:T23]] [[Category:T30]] [[Category:T40]] [[Cat
    27 KB (4,366 words) - 03:23, 28 October 2015
  • PC-100
    | {{T20}}, {{T21}}, {{T22}} || N/A || Occupied || Depends || 256MB || 512MB{{footnote|2}}
    4 KB (506 words) - 01:04, 6 November 2020
  • Installation instructions for the ThinkPad T21
    Specific installation notes for the ThinkPad {{T21}}. This model is rather similar to the {{T20}} and {{T22}}. Tips for those pages may apply.
    620 bytes (81 words) - 15:29, 30 August 2007
  • Power Connector
    *ThinkPad {{T20}}, {{T21}}, {{T22}} (rated 54W 3.36 Amps)
    18 KB (2,602 words) - 23:54, 23 May 2023
  • Floppy Connector
    ThinkPad T20 line supports a floppy drive connected to [[Parallel Port]]. [http://www.v *ThinkPad {{T20}}, {{T21}}, {{T22}}, {{T23}}
    12 KB (1,877 words) - 15:59, 15 November 2020
  • VGA Port
    *ThinkPad {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}
    4 KB (424 words) - 15:56, 15 November 2020
  • PS/2 Port
    *ThinkPad {{T20}}, {{T21}}, {{T22}}, {{T23}}
    3 KB (404 words) - 16:01, 15 November 2020
  • Parallel Port
    *ThinkPad {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}
    3 KB (371 words) - 15:58, 15 November 2020
  • Serial Port
    *ThinkPad {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    3 KB (392 words) - 15:59, 15 November 2020
  • Batteries
    *{{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}
    6 KB (687 words) - 13:42, 19 May 2020
  • Docking Port
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}
    7 KB (956 words) - 13:48, 22 November 2020
  • TFT display
    ...2 || 150 || || || LG-Philips || LP133X7 || {{I1200}}, {{A22e}}, {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{R30}}, {{R31}}, {{R40}}, {{R40e}} ...P/N' (ASM?) 05K9635) || 96,2 || || || || LG-Philips || LP133X7 (F21B) || {{T20}}
    22 KB (2,286 words) - 10:01, 5 September 2023
  • USB Port
    *ThinkPad {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    3 KB (392 words) - 15:57, 15 November 2020
  • CPU upgrade
    === Upgrading your A20m/A20p/A21m/A21p/A22m/A22p, T20/T21/T22's CPU ===
    3 KB (468 words) - 14:03, 17 November 2020
  • How to hotswap Ultrabay devices
    | {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}} ...<!-- IBM ThinkPad A20m, A20p, A21e, A21m, A21p, A22e, A22m, A22p, T20, T21, T22, X20 and X21 -->
    31 KB (4,750 words) - 02:58, 11 January 2024
  • Problem with failing memory slot
    *ThinkPad {{T20}}/{{T21}} (in some cases) ...in the secondary memory slot. The root cause of the failing memory slot in T20/T30 series laptops is in fractured solder joints between the RAM memory mod
    3 KB (522 words) - 05:32, 28 January 2011
  • BIOS Upgrade Downloads
    | {{T20}} | {{T21}}
    17 KB (1,774 words) - 19:38, 1 November 2017
  • S-Video Port
    *{{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    1 KB (205 words) - 15:56, 15 November 2020
  • List of DMI IDs
    | {{T20}} 2647-UC2 | {{T21}} 2647-8AG
    131 KB (15,811 words) - 16:19, 30 August 2022
  • Table of thinkpad-acpi LEDs
    ! {{T20}} ! {{T21}}
    12 KB (1,236 words) - 14:48, 9 December 2013
  • Installing Ubuntu on a ThinkPad T20
    ...D has been reported to work on machines with 256MB of RAM or more. If your T20 has less than 256MB RAM, you should consider using the alternate install CD This happened on my T20 (384MB). The alternate CD is probably a better bet as usual.
    13 KB (2,132 words) - 04:57, 2 July 2008
  • Default meanings of special keys
    | {{T20}}, {{T21}}, {{T22}}, {{T23}}
    16 KB (1,736 words) - 13:18, 26 August 2022
  • Installing Ubuntu on a ThinkPad T22
    The T22 is has very similar hardware to the T20 and T21, so tips for those models likely apply here as well. In particular see: * [[Installing Ubuntu on a ThinkPad T20]]
    1 KB (216 words) - 15:08, 10 February 2009
  • Hard drive firmware update
    {{T20}}, {{T21}}, {{T22}}, {{T23}},
    2 KB (241 words) - 17:45, 23 June 2009
  • Power Port
    | {{T20}}, {{T21}}, {{T22}}<br>{{T23}}, {{T30}}, {{T40}}<br>{{T40p}}, {{T41}}, {{T41p}}<br>{
    15 KB (2,355 words) - 23:43, 23 May 2023
  • Colour profile
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}
    6 KB (927 words) - 17:04, 28 August 2016
  • 硬件规格
    '''[[:Category:T20|ThinkPad T20]]''' '''[[:Category:T21|ThinkPad T21]]'''
    8 KB (1,222 words) - 11:56, 31 January 2020
  • Ultrabay 2000 Travel Bezel
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    839 bytes (105 words) - 21:24, 13 October 2020
  • CR2032
    *{{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}, {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}
    2 KB (267 words) - 20:58, 4 April 2020
  • Ultrabay 2000 CD-RW Drive
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    1 KB (181 words) - 17:28, 13 October 2020
  • Ultrabay 2000 DVD-ROM Drive
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    3 KB (362 words) - 20:44, 13 October 2020
  • Ultrabay 2000 CD-RW/DVD-ROM Combo Drive
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    2 KB (342 words) - 20:48, 13 October 2020
  • Ultrabay 2000 CD-RW/DVD-ROM Combo Drive II
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    2 KB (345 words) - 20:45, 13 October 2020
  • Ultrabay 2000 CD-RW/DVD-ROM Combo Drive III
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    2 KB (333 words) - 20:48, 13 October 2020
  • Ultrabay 2000 CD-RW/DVD-ROM Combo Drive IV
    * {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
    3 KB (391 words) - 20:48, 13 October 2020
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