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OEM SKU: 10320 

Extreme Compatible Double Fiber 40G QSFP+ Module (Tx/Rx 4 CWDM lines:1271,1291,1311,1331, up to 44.8 Gbps, Max. 10km over SMF, 9.7 dB, Temp. 0-70C, LC Connector)

OEM SKU: QSFP-40G-BD-RX 

Cisco Compatible BIDI Rx Only for Monitoring, Single Fiber 40G QSFP+ Module (Rx 850/900nm, up to 41.25Gbps, Max. 150m over MMF (OM4), 2 dB, Temp. 0-70C, LC Connector)