The 56-watt adapters can overheat, cause damage to the circuit board and melt through the case, the company and the U.S. Consumer Product Safety Commission said.
The power adapters were shipped mostly with IBM ThinkPad i Series, ThinkPad 390 and 240 Series and a limited number of ThinkPad s Series laptop computers and have the part number 02K6549, the agency said.
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