D-Link 1000BASE-LX Single-Mode 10 Km LC SFP MSA Uncoded Transceiver - (DEM-310GT)

An "MSA Uncoded Compatible SFP" refers to a Small Form-Factor Pluggable (SFP) module that is compliant with the Multi-Source Agreement (MSA) standard but does not support digital coding. Let's break down what each of these terms means:

1. Small Form-Factor Pluggable (SFP): SFP is a compact, hot-pluggable transceiver module used in networking and telecommunications equipment. It is commonly used in switches, routers, and network interface cards. SFP modules are designed to support various communication protocols, such as Ethernet, Fibre Channel, and SONET/SDH.

2. Multi-Source Agreement (MSA): The MSA is an industry standard that defines the mechanical, electrical, and optical specifications of SFP modules. The MSA ensures interoperability and compatibility between SFP modules from different manufacturers. It allows vendors to produce SFP modules compatible with various networking equipment.

3. Uncoded: SFP modules can be coded or uncoded. Coded SFP modules include a digital diagnostic monitoring interface, often referred to as "Digital Diagnostics Monitoring" (DDM) or "Digital Optical Monitoring" (DOM). This interface provides real-time monitoring and reporting of various parameters, such as optical power, temperature, and voltage. On the other hand, Uncoded SFP modules do not support this digital interface and lack monitoring capabilities.

An MSA Uncoded Compatible SFP refers to a small form-factor pluggable module that follows the industry-standard MSA but does not include digital monitoring capabilities. It is important to note that the compatibility aspect ensures that the module will physically fit and operate with any networking equipment that supports SFP modules, regardless of the manufacturer.