7.4 x 5.0mm DC Male to 5.5 x 2.1mm DC Female Power Plug Tip for Dell D400 / D500 / D600 / D800 Laptop Adapter Tips: 7.4 x 5.0mm Suits for laptop adapter: Dell Inspiron E1405, E1505, 1150, 1420, 1501, 1520, 1521, 1526, 1720, 1721, 6000, 6400, 8500, 8600, 8600C, 9200, 9300, 9400, 300M, 500M, 505M, 510M, 600M, 700M, Latitude 100L, 131L, D400, D410, D420, D430, D500, D510, D520, D531, D600, D610, D620, D630, D800, D810, D820, D830, X1, X300, Precision M20, M60, M65, M70, M2300, 4300, Vostro1000 1400 1500 1700, XPS M1210, M1330, M140, M1530, M170, Studio 1517 1537 1735 1737