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<h1 id="pagetop">ThinkPad R400</h1>
<p>
It is believed that all or most R400 laptops are compatible.
See notes about <a href="../install/r400_external.html#cpu_compatibility">CPU compatibility</a> for
potential incompatibilities.
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<p>
There are two possible flash chip sizes for the R400: 4MiB (32Mbit) or 8MiB (64Mbit).
This can be identified by the type of flash chip below the palmrest: 4MiB is SOIC-8, 8MiB
is SOIC-16.
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<b>The R400 laptops come with the ME (and sometimes AMT in addition) before flashing libreboot. Libreboot disables and removes it
by using a modified descriptor: see <a href="gm45_remove_me.html">gm45_remove_me.html</a></b> (contains notes, plus
instructions)
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<p>
Flashing instructions can be found at <a href="../install/index.html#flashrom">../install/index.html#flashrom</a>
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<a href="index.html">Back to previous index</a>.
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<p>
The R400 is almost identical to the X200, code-wise. See <a href="x200.html">x200.html</a>.
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TODO: put hardware register logs here like on the <a href="x200.html">X200</a> and <a href="t400.html">T400</a> page.
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Copyright © 2014, 2015 Francis Rowe <info@gluglug.org.uk><br/>
This document is released under the Creative Commons Attribution-ShareAlike 4.0 International Public License and all future versions.
A copy of the license can be found at <a href="../cc-by-sa-4.txt">../cc-by-sa-4.txt</a>.
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This document is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See <a href="../cc-by-sa-4.txt">../cc-by-sa-4.txt</a> for more information.
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