This cable works very well on my computer except for error 515. This will do the job until another cable I ordered comes with the corrected f1 error. All in all, if you are looking for a cable that works with your HP 8300 CMT and you don't mind pressing F1 every time you turn it on, then this will definitely help you. I ordered this after emailing a photo of my old 6 pin connector. They emailed this link for an accurate install and no more 515 errors! https://www.amazon.com/COMeap-Power-Adapter-Workstation-12-inch/dp/B06XW7RWNH/ref=psdc_1161760_t1_B089KQ2Q92
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