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.