HP ProOne 400 G2 Intel Core i5 4GB 500GB HDD Windows 10 All-in-One Computer - TAB Retail
799920-001 For HP Pro One 400 G2 AIO Motherboard 819416-001 819416-501 LGA1151 Mainboard 100%tested fully work - AliExpress
HP ProOne 400 G2 20 Inch All-in-One: i3-6100 8GB RAM 256GB SSD
HP ProOne 400 G2 20" Non-Touch AIO i5-6500 @ 3.20GHz 8GB RAM NO HDD NO WIN – Villa Palčić
HP All-in-One Computer ProOne 400 G2 (P5U54UT#ABA) Intel Core i5 6500 (3.20GHz) 8GB DDR4 500GB HDD 20" Touchscreen Windows 7 Professional 64-Bit (available through downgrade rights from Windows 10 Pro - Newegg.com
HP 20" ProOne 400 G2 All-In-One Desktop Computer W5Y40UT#ABA B&H