Review on 693711-001 677774-001 HP EliteBook 745 820 840 850 G1 G2 AC Adapter Charger; Probook 430 440 450 455 G1 G2; HP G42 G50 G56 G60 G61 G62 G71 G72 Power Cord by Larry Lackings

The order came earlier than expected and the charger looks like a good quality item. However, as long as the charger is connected to the laptop, the processor is limited by the low performance speed. This means that a processor whose normal frequency is 2.2 GHz will be capped at 0.79 GHz regardless of the load on the processor. As soon as I disconnect the charger, the processor frequency increases to 2.2 GHz. This renders the laptop unusable while connected to the charger.