Question about IBM ThinkPad T21 2648 Notebook

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IBM Thinkpad T21

Have this model without power supply.I have a power supply from a 385 XD that is 16 volts 3.36 amps. Will this power supply work on T21 ?

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Re: IBM Thinkpad T21

Input Voltage: AC 100-240V, 50-60Hz Output Voltage: DC 16V, 4.5A, 72W Max

You can get one on EBAY for cheap.

Posted on Nov 19, 2007

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I cannot get network connection with my ibm t21 thinkpad .have a wireless router abd my hp laptop is working fi


the T21 has PCMCIA slot , you need a WiFi card (PCMCIA) : i dont believe it has built in or isntalled WiFi card.

Feb 05, 2012 | IBM ThinkPad T21 Notebook

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Ibm thinkpad t21 only have 16 bit color and 800 x 600 pixels. looks like its in safe mode but its not.

Check video drivers. Download new one, uninstall old drivers, restart computer, install new drivers, restart computer.

Then right click on desktop -> propertites -> display.

Aug 08, 2009 | IBM ThinkPad T21 2648 Notebook

1 Answer

How large of a hard drive is supported on the ibm t21

The ThinkPad T21 is a laptop with a single drive bay.
You cannot setup this laptop with two hard drives in any RAID configuration.
You can add an external USB hard drive and copy/backup data to this hard drive.
You can connect this laptop to a network and copy/backup data to another computer/server on the network.

Mar 16, 2009 | IBM ThinkPad T21 2647 Notebook

1 Answer

IBM Thinkpad T21

This is a common problem with the T20 series Thinkpad. The problem is with the power management chip. Unfortunately, you will have to replace the motherboard to fix it. Since these are a bit on the older side, you can get a motherboard off Ebay at a reasonable price.

Aug 04, 2008 | IBM ThinkPad T21 Notebook

1 Answer

Nothing appear on the screen

Remove any devices connected and power it on by itslef, either on battery or power source, if it doesnt work, it may have bad processor, When they go bad most laptops wont boot period.

Feb 18, 2008 | IBM ThinkPad T21 Notebook

4 Answers

IBM ThinkPad T21 / Network


To my knowledge an IBM ThinkPad T21 originally was shipped out from the manufacturer without a WiFi networking interface, sorry.

Kind regards.

Feb 08, 2008 | IBM ThinkPad T21 Notebook

1 Answer

Cracked TFT screen on IBM Thinkpad T21


46L4843 LCD 14.1

05K9942 LCD XGA 14.1




05K9944 ALL SUB TO 04L2348

Oct 16, 2007 | IBM ThinkPad T21 2648 Notebook

3 Answers


i have the same problem. actually its a common problem for many T21 and other old IBM laptops.
i searched that you have to take all power (batery, adaptor)
press the power 10 times and press it for 30 secs then reinsert the battery or adaptor and try to power it on.
they say its done to discharge a certain capacitor that got overcharged after overcharging the battery.
that worked for me before but now my T21 wont start any more with this process.

May 20, 2007 | IBM ThinkPad T21 Notebook

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