Hello, I'm an owner of a Dell Optiples 760 Slim desktop and to need a new power supply but I can't find any that fit the small computer! I hope that any of you can help me find a power supply that has the power up to 300w or more. Thanks!
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You wont find one.
dell will be the only one who makes one to fit and all you will able to get is another 300w one.
you need to swap out the case for your computer. that will allow you to choose what ever PSU you want.