Replace that older or non functioning AT power supply with StarTech.com's ultra reliable PS2POWER230 230 watt power supply. The PS2POWER230 is guaranteed compatible with Intel Pentium and AMD processors and designed for an extra long life in personal and industrial computers. The PS2POWER230 power supply ensures stable system performance, using an automatic temperature control fan to move hot air away from sensitive components. A superior power filtration system is achieved through an EMI/RFI power filter. Low noise/ripple as well as short circuit protection are additional reasons why the PS2POWER230 is the ultimate power supply for system stability.