Bubble gear: Gear from bankrupt companies.
Distributor overstock: The clearance rack. Equal-to-new gear sold cheap to fulfill quotas.
Equal-to-new: Lightly used hardware.
Floor models, demos or lab gear: Hardware used for testing or demonstration but never deployed.
Off-lease: Hardware resold after a lessee returns it.
Refurbished or refurb: Slightly reworked gear, for example, fans or power supplies replaced before resale.
Remanufactured or remand: Completely reworked hardware, for example, memory or hard drives added.
Remarketed: Refurb or remand gear being resold by the original vendor.
Used: General term for most secondary hardware.
Vintage: Out-of-production hardware such as VAX systems.
White box: Clone equipment. Not truly secondary market but lumped in because of its low price.