HP ProDesk 400 G3 SFF vs. HP ProDesk 600 G3 SFF Comparison
Open Box: HP Desktop Computer ProDesk 400 G3 MicroTower (P5U87UT#ABA) Intel Core i5 6500 (3.20 GHz) 4 GB DDR4 500 GB HDD Windows 7 Professional 64-Bit (available through downgrade rights from Windows 10 Pro) - Newegg.com
HP ProDesk 400 G3 MT Computer i5-6500 Windows 10 - Grade A
HP ProDesk 400 G3 MT/SFF * ProDesk 490 G3 MT HP ProOne 400 G2 AiO* ProDesk 400 G2 DM