Upgrade 1.5TB HP Prodesk 400 G3 (Microtower) SATA HDD - YouTube
PC Source - HP ProDesk 400 G3 MT Brandnew never been used... | Facebook
HP Desktop PC ProDesk 400 G3 (V0C44UT#ABA) Intel Core i3 6th Gen 6100 (3.70GHz) 4GB DDR4 500GB HDD Windows 7 Professional 64-Bit (available through downgrade rights from Windows 10 Pro) - Newegg.com
HP ProDesk 400 G3 MT Desktop | i5-6500 3.2GHz | 8GB | 500GB | Windows – Dynamic Computer Surplus
HP ProDesk 400 G3 MT Desktop | i5-6500 3.2GHz | 8GB | 500GB | Windows – Dynamic Computer Surplus