I needed a portable esx system for lab testing and application development.  This fit the bill perfectly.  Its small, lightweight, and does a terrific job.  I add 32 gigs of ram and a 1tb M.2 SATA III drive for fast disk access.  I have absolutely zero complaints about this system.  There is one modification that has to be made to the bios to install ESXi, but there are half a dozen easy to find web sites that detail it.