It works fine, but is missing some circuitry to satisfy the laptop charging system, Genuine 90W Samsung NP-R580-JS03ZA AC Adapter Charger Power Cord, SAINT LOUIS Missouri, 63126
Genuine 90W Samsung NP-R580-JS03ZA AC Adapter Charger Power Cord
Genuine 65W Lenovo ThinkPad X240 20AM0017ZA AC Adapter Charger Power Cord
The charger works just fine, but the charging system complains when you plug it in. In fact the charging system says it will charge he laptop, but it lacks some management circuitry. A small annoyance.