A modular box, also known as a modular jack or a modular socket, is a type of electrical outlet commonly used for telecommunications and networking purposes. It consists of a plastic housing with metal connectors inside, designed to accept modular connectors (such as RJ-45 for Ethernet or RJ-11 for telephone).br br These boxes are typically mounted on walls or panels and provide a standardized interface for connecting various devices, such as computers, phones, or network equipment, to a network or telecommunications system. The modular nature of these boxes allows for easy installation and replacement of connectors without the need for specialized tools or wiring.br br Modular boxes are widely used in both residential and commercial settings for networking and telecommunications applications, offering flexibility, convenience, and ease of maintenance.