Ex lease means they ( hopefully) did a complete nuke and pave, but otherwise it is as it came from the customer, perhaps with a case wiped down and a basic function check that it booted and ran. Reconditioned would be the same, just they took it apart and cleaned out the dust from the usual places, like fans, case inside and keyboard. Recon should come with a better warranty, but here you typically get a 3 month warranty on Ex lease, and a year on a recon, though you will still get the old hard drive. So long as the drive has no reallocated sectors, or pending ones, it will last a year or so extra, as it typically was never turned off in a business machine. Power supply might be getting old, but they are cheap to replace in a desktop, certain models excluded. Laptop a similar thing, though a ex lease generally will have some case wear, and a refurb only very light scuffing after the cleaning is done.