What is the difference between individual hardware types ?

F/S = The product is unused and packaged by the manufacturer in the original packaging. The product has a warranty from the manufacturer.
NOB = The product is unused, but the original packaging from the manufacturer is damaged or torn. The product has a warranty from the manufacturer.
NEW = The product is unused, packaged by the manufacturer in the original packaging or not when it comes as bulk, pulls and spare. The product has a warranty from the manufacturer.
NIB = Unused product packaged in a replacement pack. The product has a warranty from the manufacturer.
REF = The product has been cleaned and refurbished by the seller. The product has a warranty from the seller.
OEMREF = Product that is refurbished and certified by the original manufacturer is supplied by the manufacturer in the original packaging. The product has a warranty from the manufacturer.
USED = The product has not been refurbished and tested. It has no warranty.