HP Z400 WorkStation Tower Xeon E5645 @2.40 8GB RAM 2x 1TB Win 10 Pro AMD FirePro | eBay
HP Z400 Workstation Desktop SSD Solid State Drive W/ Windows 10 64-Bit | eBay
Used HP Z400 Workstation 3.0GHz X6C 12GB 500GB DVDRW Win 10 Pro 64 Tower Computer B - Walmart.com
HP Workstation Z400 (Intel Xeon Quad Core, 2.60GHz, 8GB RAM, 1TB SATA Hard Drive, Windows 10 Home) Tower Gaming Desktop - Silver for sale online | eBay
HP Z400 Workstation (Intel Xeon W3520 2.66GHz 2GB 250GB Win 10 Pro) PC | eBay