This listing is for (2) Cisco SFP-10G-SR-S Class 1 10-3105-01 Transceiver Module .These items have been tested and are in good working condition. We’ll provide a 60-day warranty. We do not provide any additional software or anyother parts with this item unless expressly stated above. When applicable anyconfiguration, software, password issues as well as compatibility forparticular purposes are Buyer’s responsibility and are not covered by "NODOA" warranty.