Amazon.com: Genuine Dell 250W Watt CYY97 7GC81 L250NS-00 Power Supply Unit PSU For Inspiron 530s 620s Vostro 200s 220s, Optiplex 390, 790, 990 Desktop DT Systems Compatible Part Numbers: CYY97, 7GC81, 6MVJH,
Amazon.com: Mackertop 250W TFX0250D5W Power Supply Compatible with Dell 530S 531S, Vostro 200(Slim) 200S 220S, Studio 540S Small Form Factor(SFF) Systems : Electronics