Original DELL DC power cable adapter 7.4mm to 4.5mm AC Power Adapter Converter Dongle Survey This direct current dongle with connectors of 7.4 mm to 4.5 mm has been specially developed for the ultra-slim XPS system. It is light and easy to carry. It allows operating systems Inspiron 13, 14, XPS 12, 13, 13 and MLK Precision M3800 via conventional AC adapter from Dell with 7.4 mm connector. models Inspiron 13 (7347), 14 (7437) Precision M3800 XPS 12, 12 MLK, 13, 13 Classic Part #: 57J49, D5G6M, 057J49, 0D5G6M, 450-18765, 331-9319 State / Condition: New / New