OptiPlex 5040 and OptiPlex 7040 Small Form Factor (SFF) Teardown removal guide for customer replaceable units (CRUs) | Dell US
Refurbished: Dell Optiplex 7050 Micro Form Factor Desktop, Intel i5 7500T 2.7Ghz, 16GB DDR4, 256GB NVMe M.2 SSD, Wi-Fi, HDMI, Windows 10 Pro - Newegg.com
Dell M.2 PCIe NVME Gen 3x4 Class 40 2280 Solid State Drive - 512GB : Storage, Drives & Media - Accessories | Dell Czech Republic
Amazon.com: Dell Optiplex 7040 Micro Business Desktop Computer PC Intel 4-Core i7-6700T 2.8GHz Up to 3.6GHz 32GB DDR4 New 1TB NVMe M.2 SSD WiFi Bluetooth HDMI DP Windows 10 Pro Wireless Keyboard&Mouse(Renewed) :
Refurbished: Dell Optiplex 7040 Micro Form Factor Desktop, Intel i7 6700T 2.8Ghz, 16GB DDR4, 1TB NVMe M.2 SSD, HDMI, Windows 10 Home - Newegg.com