I have a small problem and a question.
I have an X220 with a 65W power supply of which I replaced the DC cable.
Oddly enough it is now recognized as 90W.
This is usually ok, but under combined heavy load and charging, it is overheats and shuts off.
1) how does the laptop know which powersupply is attached?
Is there a circuit in the powersupply, is there something in the cable, or does the laptop measure the max current?
2) How can I make it be recognized as 65W again?
Read this and the subsequent posts:
http://forum.thinkpads.com/viewtopic.ph ... 90#p682644
Collectibles: T430s (IPS FHD + Classic Keyboard), X32 (IPS Screen)
Retired: X61 7673-V2V, T60 1952-F76, A31p w/ Ultrabay Numpad
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