It works fine, but is missing some circuitry to satisfy the laptop charging system, Genuine 120W Lenovo C540-326 C540-322 AC Adapter Charger Power Supply, Philadelphia Pennsylvania, 19154
Genuine 120W Lenovo C540-326 C540-322 AC Adapter Charger Power Supply
Genuine 45W AC Adapter Charger Asus R540LA-XX020T
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.