HP Prodesk 400 G3 SFF SSD Upgrade and Test(Speed Really Improved) - YouTube
Restored HP ProDesk 400 G3 SFF i5-6500 3.20GHz Wi-Fi 16GB 256GB SSD Win 10 Pro 1 Yr Wty (Refurbished) - Walmart.com
Amazon.com: HP ProDesk 400 G3 Small Form Factor, Intel Core Quad i5 6500 up to 3.6 GHz, 16GB DDR4, 512GB SSD, WiFi, BT 4.0, DVDRW, VGA, DP, Windows 10 Pro 64-Multi-Language Support
Amazon.com: Sparepart: HP Inc. System Board ProDesk 400 G3 SFF, 799156-001 (400 G3 SFF) : Electronics
Upgrade HP Mini ProDesk 400G2/G3/G4/G5/G6 Tower/SFF - HDD to PCIE M.2 NVME SSD - YouTube