Fibre Module Colour codes The latch colour indicates the SFP wavelength. There isn't an IEEE standard as such that covers everything but the whole industry pretty much agrees on an SFP standard that we follow: CWDM SFP: 1470nm Grey 1490nm Purple 1510nm Blue 1530nm Green 1550nm Yellow 1570nm Orange 1590nm Red 1610nm Brown Gigabit SFP: Multimode (850nm) Black Singlemode (1310nm) Blue Singlemode (1550nm) Yellow Multimode 850nm Black Singlemode 1310nm Blue Singlemode 1550nm Red Bidi SFP: 1310/1490nm pairs: 1310nm side Blue 1490nm side Purple 1310/1550nm pairs: 1310nm side Blue 1550nm side Yellow 10G SFP+ Bidi 1270nm Light Blue 1330nm Light Green Note: The 10G tags are on the bottom of the latch. SilverNet Ltd Phone: +44 (0)871 2233 067 Web: www.silvernet.com