We bought three of these units.  When they arrived they were running sluggish and were still on the early 2016 version of Windows 10 which is no longer supported. After hours of running updates we found that none of the Dell drivers had been installed.  After installing those drivers the machines finally started performing as expected.  It’s surprising that the company refurbishing these machines would ship them with an old unsupported version of Windows 10 and outdated or no Dell drivers.  10 hours of tech support from our IT vendor essentially wiped out any savings on the hardware.  Better to buy a new model going forward.