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How to add RAM on HP Compaq Elite 8300USDT - YouTube
CMS 16GB (2X8GB) DDR3 10600 1333MHZ Non ECC DIMM Memory Ram Upgrade Compatible with HP/Compaq® Elite 8300 Sff/Cm, Elite 8300E Sff - A66 at Amazon.com
HP Compaq Elite 8300 CMT Intel Core i7 8 GB RAM NO HDD Windows 10 Pro
HP 8300 Elite Small Form Factor Desktop Computer, Intel Core i5-3470 3.2GHz Quad-Core,