You can check the price history of StarTech Cisco QSFP-40G-LR4-S Compatible QSFP+ Module (QSFP40GLR4S) | 40GBASE-LR4, 40GbE Single Mode Fiber Optic Transceiver, 40GE Gigabit Ethernet LC 10km, 1270nm to 1330nm DDM Cisco Firepower here.
100% CISCO QSFP-40G-LR4-S COMPATIBLE QSFP+ TRANSCEIVER: Works with Cisco switches like Firepower, ASR1000, ASR9000, C9300, C3850 and others
TECHNICAL SPECS: 40GBASE-LR4 | 40 Gbps | Single Mode (SMF) | LC Connector | 1270nm to 1330nm | Digital Diagnostic Monitoring (DDM) | Distances up to 10km (6.2mi)
TESTED FOR OEM HOST COMPATIBILITY: Hot-swappable in Cisco routers and switches; DDM support reports the transceiver's status to most SNMP network management tools
WORKS WITH MSA COMPLIANT SWITCHES: Also works with switch models from Ubiquiti, D-Link, Netgear, Supermicro, TP-Link and more that accept uncoded modules
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