Dell Genuine OEM 250 Watt Power Supply Unit for Inspiron 530s, 620s, Vostro 220s Slim Model, Part Number: 3WFNF AC250NS- Genuine Dell 250W Power Supply Unit For Select Inspiron, Vostro, Studio, and Optiplex Slim Desktop Systems. Output: 250 W | Input: 100-127V~/8A / 200-240V~4A | AC Input: Frequency: 50-60Hz | Connectors: 1 x 24-Pin ATX Connector, 3 x SATA Connector, 1 x 4-Pin ATX Connector ****This power supply model does not Have 4-Pin Floppy Drive Connector. Please make you this meets your requirements for you system. Inspiron 530s, 531s, 537s, 540s, 545s, 546s, 560s, 570s, 580s, 620s , 620s, Vostro 200s, 220s, 230s, 260s, 400s, Optiplex 390, 790, 990, and Studio 540s, 537s, 560s Slim Desktop Systems Compaitble Model Numbers: PS- 5251-5, L250NS-00 , PS-5251-08D, H250AD-00, D250A1005L, D250ED-00, DPS-250AB-67 A, F250ED-00, D-0250ADU00-101, D250ND-00, REF, DPS-250AB-73A, AC250NS-00, PCA038, TFX0250D5WB, D250AD-01 D250ED-01, DPS-250AB-68 A, D250AD-00, F250AD-00, D-0250ADU00-201, PC7068, HP-D2506R0, PS-5251-5, DPS-250AB-36, TFX0250D5WB, H250ED-00, D250E006L, PS-5251-06 Compatible Part Numbers: WX9P8, CYY97, 7GC81, 6MVJH, YJ1JT, 3MV8H, 3WFNF, 5FFR5, 76VCK, HY6D2, MPX3V, PWJ55, T498G, W208D, W209D, W210D, X3KJ8, XFWXR