Hi guys Does anyone have any experience using third-party AC adapters? My M4400 charger cable has broken, and it looks like it will take a while to source another 130W unit. In the meantime I've found a Delta Electronics 90W 19V 4.74A charger. If I stayed away from 3D work etc., would this be okay for everyday use? I've heard of others using 90W units with their Precisions, but I don't know how they got on. Thanks in advance. Jonty P.S. My current AC adapter is rated as 130W 19.5V 6.3A, if that helps.