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Hp Compaq 8100 Elite CMT Intel Core i5 3.20 GHz 8GB RAM 1TB Win 10 Pro Office 21 | eBay
For HP 8100 8180 Elite CMT Motherboard LGA1156 DDR3 SDRAM 531990-001 505799-001 | eBay
How to Upgrade or Replace Parts on HP Elite 8100, 8200, 8300 Small Form Factor Desktop - YouTube