System Five supports the Godex series of label printers. Both in wiswig or raw mode in most versions of System Five.
They are not widely available as they do not sell through distributors but you can contact the Arturo below for where to buy in a particular location
Godex International Americas
Tel: +1 888-987-8878 (toll free)
Tel: +1 805-987-5100
Fax: +1 805-987-5115