0P4240 | American Power Conversion | PCB ASSY XR I/O BCKPL 640-4124 | Code: 0P4240, PCB ASSY XR I/O BCKPL 640-4124, please visit manufacturer website and select your region or go to shop: http://www.apc.com/shop/us/en/categories and write into search box: PCB ASSY XR I/O BCKPL 640-4124 or 0P4240. | $ | |