Genuine TFX0250D5W 250W Bestec Power supply For Dell SFF Small Form Factor PSU Slim Inspiron 530s, 531s, Vostro slim 200s, 220s, Vostro 200(Slim), 400(Slim) Studio 540s, Dell Part Numbers XW605, YX300, YX301, XW604, XW784, XW783, YX299, YX303, 6423C, K423C, N038C, H856C, YX302, XW602 Compatible Model Numbers: TFX0250D5W, DPS-250AB-28 B, 04G185021200DE + caseen CLASSIC Touch Screen Stylus Pen