CISCO - QSFP+ TRANSCEIVER MODULE (QSFP-40G-LR4). KEY FEATURES : DEVICE TYPE : QSFP+ TRANSCEIVER MODULE FORM FACTOR : PLUG-IN MODULE NETWORKING : CONNECTIVITY TECHNOLOGY : WIRED CABLING TYPE : 40GBASE-LR4 DATA LINK PROTOCOL : 40 GIGABIT ETHERNET DATA TRANSFER RATE : 40 GBPS OPTICAL WAVE LENGTH : 1271 NM / 1291 NM / 1311 NM / 1331 NM MAX TRANSFER DISTANCE : 6.2 MILES COMPLIANT STANDARDS : IEEE 802.3BA EXPANSION / CONNECTIVITY : INTERFACES : 1 X ETHERNET 40GBASE-LR4 - LC SINGLE MODE X 2 CONDITION : NEW FACTORY SEALED. AVAILABILITY : IN STOCK. OUR WARRANTY : 30 DAYS.