本文规定的性能要求包括连接至连接器插座的连接器插座后壳。插座类型为印刷电路板背面安装的连接器。匹配的连接器插头固定在背板PCB上，固定在主板上，或直接安装在电路卡机架的后缘上。单光纤电缆进入后壳的防电缆进入功能包括限制移动、位置和扭曲的能力；但是，没有任何功能可以捕获布线或防止各种环境的渗透。

The performance requirements specified herein cover a connector receptacle backshell that is affixed to the connector receptacle. The type of connector receptacle is one mounted to the back edge of a circuit card or printed circuit board (PCB). The mating connector plug is affixed to a backplane PCB, affixed to a motherboard, or mounted directly onto the back edge of a circuit card rack. Cable entry resistant features for the single fiber cables entering this backshell include ability to restrict movement, position, and twist; however, there are no features to capture the cabling or to prevent the penetration of various environments.