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Schematics Lenovo Thinkpad X1 Extreme Gen4 Wistron 213015-1 X1 Extreme Gen4.pdf

Hello my friend, can you verify whats the difference between BIOS U2601 AND U8102 ? Im sending both.. i think they do the same thing.? Mine the power button blinks when you connect charger but it doesnt power on. Thanks
U8102 can non Programming
 
U2601
I say U8102 not for BIOS not Programming
not Understand ?
Bro, I can READ u8102 so Its for something because when you connect charger I have communication only on that chip. Better manners next time my friend!
 

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