Maintenance & Service Guide HP ProOne 400 G2 20 inch All-in-OneHP ProOne 460 G2 20 inch All-in-OneHP ProOne 480 G2 20 inch A
![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 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](https://c1.neweggimages.com/ProductImage/A1N8_1_20160616715925606.jpg)
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 ProOne 400 G2 AIO Touch 20" - Pentium G 3.2GHz -4GB RAM - 512GB SSD (scuffs/scratches) - Walmart.com HP ProOne 400 G2 AIO Touch 20" - Pentium G 3.2GHz -4GB RAM - 512GB SSD (scuffs/scratches) - Walmart.com](https://i5.walmartimages.com/asr/72f93296-2080-4815-b551-193a4559ded7.a5e09571878587c176628caf40d70a8b.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)