StarTech.com Dell EMC SFP-1G-BX40-D Compatible SFP Module - 1000Base-BX40 Fiber Optical Transceiver Downstream (SFP1GBX40DES) - 100% Dell EMC SFP-1G-BX40-D compatible guaranteed - Lifetime Warranty on all StarTech.com SFP modules - Meets or exceeds OEM specifications - Our SFP modules comply w/ MSA industry standards - Low power consumption of < 1.6W - Pairs w/ SFP100BBXDST: