Dell OptiPlex 3240 3440 7440 All-In-One Series 155W Switching Power Supply AC155EA-00 TPN8G 0TPN8G CN-0TPN8G.Dell Part Number: TPN8G 0TPN8G CN-0TPN8GAPI Part Number: APE003Dell Model Number: AC155EA-00Compatible Models: Dell OptiPlex 3240 3440 7440 All-In-One SeriesSpecifications:Input:100-240V~3.0A50/60HzOutput:12.0VA 10.0A12.0VB 11.5A12.0VSB 1.7ATotal Output: 155W