SFP Module features

SFP Fibre modules themselves come in 2 distinct flavors: multimode and single mode. These correspond to their optical fibre counterparts, and infrequently have color coding standards for simple use.

The distinction between the 2 is probably a subject for another day, however you’ll wish to confirm that you’re SFP modules can match the kind of fiber cable you’ll be connecting. SFP optical transceivers are all hot-swappable, that is a very nice feature. This suggests they can be put in while your switch and network are up and running. No need to reset or flip any network devices off!