This listing is for a LOT OF (10) Citrix FTLX8571D3BCVCTX A210G/1G Dual mode SR 850nm MMF transcever .These items have beentested and are in good working condition.We’ll provide a 60-day warranty. We donot provide any additional software or any other parts with this item unlessexpressly stated above. When applicable any configuration, software, passwordissues as well as compatibility for particular purposes are Buyer’s responsibilityand are not covered by \"NO DOA\" warranty.