Refurbished: HP Z400 Workstation - Xeon Quad-Core W3565 3.2GHz - 8GB Ram - 1 TB Hard Drive - DVD/RW Drive - ATI RADEON HD 2400 Video Card - Windows 10 Pro - Newegg.com
HP WorkStation Z400 W3670 6x3.2GHz 12GB 240GB SSD DVD NVS Windows 10 Professional | Computers \ Case \ Tower | AMSO
2.5” to 3.5” SATA/SSD/HDD Carrier Drive Adapter For HP Z400 Workstation | eBay
HP Z400 Workstation Desktop SSD Solid State Drive W/ Windows 10 64-Bit | eBay