FP transceivers come in a wide variety of transmit and receive types and users can choose the right transceiver for each link to provide "optical performance" based on the type of fiber available, such as multimode fiber or single-mode fiber. Available optical SFP modules are generally classified into the following categories: MMF (SX) at 850 nm wavelength / 550 m distance, SMF (LX) at 1310 nm wavelength / 10 km distance, XD at 1550 nm wavelength / 40 km distance, 80 km distance ZX, 120 km away from EX or EZX, and DWDM. SFP transceivers also provide copper interfaces, allowing host devices designed primarily for optical fiber communication to communicate over UTP network cables as well. There are also SFPs that are wavelength division multiplexed (CWDM) and single-fiber "bi-directional" (1310/1490 nm wavelength uplink / downlink).
Commercial SFP transceivers can deliver speeds up to 4.25 G bps. Several packages of 10 Gbps transceivers are XFP and a new variant "SFP +" that is basically the same as the SFP package.