Just a word of caution to anyone using SATA SSDs via PCIe adapter - they have "disappeared" more frequently at startup and after brief periods of inactivity with 10.14.6 18G84 than all other previous Mojave builds. Have occasionally ran into this issue with previous Mojave builds with Apricorn Velocity Duo X2 and they ALWAYS have shown again on shutdown then restart. The majority of the time they were still accessible in finder, but not always shown on desktop or via shortcuts. Only once were they not accessible through an application. It has now happened multiple times since installing 18G84 with these SATA SSD drives "disappearing" from the system. This machine never sleeps, but do use screen saver and monitor sleep (no machine sleep). These two particular SATA SSDs are Samsung EVO 850 1TBs and single partitions (no RAID involved). Both show 100% overall health in DriveDx, 100% overall performance rating, and 99% SSD lifetime left indication. There are no issues with the drives themselves. Direct SATA bays are not impacted. All are loaded with SATA SSDs and have never disappeared. PCIe NVMe is system drive an also not impacted. PS - Note to the mods on this forum. Prefix post tags really should allow specific MP5,1 or MP4,1-5,1 tagging. This issue likely has no impact on MP1,1-3,1 machines.