Amazon.com: DELL Optiplex 3020 SFF Desktop PC - Intel Core i5-4570 3.2GHz 8GB 500GB DVDRW Windows 10 Professional (Renewed)'] : Electronics
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Seen in a Dell Optiplex 780 from 2010: its seems to be PCI, but not PCI-X : r/hardware
Refurbished Dell Optiplex 780-SFF WA1-0305 Desktop PC with Intel Core 2 Duo Processor, 4GB Memory, 250GB Hard Drive and Windows 10 Home Monitor Not Included (D780SFFC2D4GB250GBW10only)
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