Avago AFCT-5710PZ SFP 1000BASE-LX 1310nm 10km DOM Duplex LC/UPC SMF Optical Transceiver Module 5 1

AFCT-5710PZ

I have bought and use this kind of device in a lot of switches, specially in Cisco switches 3750 and there haven't been any issue with them. I totally recommend it.

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