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OEM SKU: DWDM-2.67G-SFP-40-47 

Multi-Vendor Compatible DWDM 2.67G SFP Module (Tx/Rx Ch. 47 (1539.77 nm)/17-61, ITU Grid: C-Band 100 Ghz, 100-2.67Gbps, Max. 40km over SMF, 13 dB, Temp. 0-70C, LC Connector)

OEM SKU: FTCD4533E3PCM 

II-VI / Finisar Compatible 400GBASE-DR4+ QSFP-DD Module (Tx/Rx 4×1310 PSM4, 106.25 Gbps (PAM4) per lane, up to 425 Gbps, Max. 2km over SMF, 4 dB, Temp. 0-70C, MTP/MPO-12 Connector)