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OEM SKU: SFP-25G-ER-S 

Cisco Compatible Double Fiber 25G SFP28 Module (Tx/Rx 1310/1310nm, 8.5 – 28.1 Gbps, Max. 40km over SMF with FEC, 16 dB, Temp. 0-70C, LC Connector)

OEM SKU: QSFP-40G-SR-BD 

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