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'''CPU Clock Speed is lowered when battery is detached - ThinkPad'''
==Symptom==

System CPU Clock speed is lowered while when battery is detached from the system.

 
==Affected Configurations==

The following ThinkPad systems maybe affected by this symptom:

    Edge 13, Edge E30, Edge E120, Edge E320
    L42, L520
    R60, R60e, R61, R61e
    R400, R500
    T60, T60p, T61, T61p
    T400, T500
    T410, T410i, T410s, T410si, T510, T510i
    T420, T420i, T420s, T420si, T520, T520i
    W500, W510, W520, W700, W700ds, W701, W701ds
    X1
    X61, X61s, X61 Tablet
    X121e
    X200, X200s, X200 Tablet
    X201, X201i, X201s, X201 Tablet
    X220, X220i, X220 Tablet, X300, X301

 
==Solution==

Condition may occur when system battery is removed and powered with a 65 watt AC adapter that the CPU clock is lowered to prevent accidental shutdown. If maximum frequency operation is preferred in such situations, a 90W AC adapter should be used.


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 Document ID : HT002982
 Legacy Document ID : MIGR-71222
 Last Updated :
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