If the length of Cat5 Cable is longer than 300 feet you may need to attach a power supply to the receiver unit. Generally if the remote display device is referenced to ground (i.e. the VGA connector ground or case, is connected to power line ground) you should not need an additional power supply to the specified maximum length of 500 feet
Do not connect this unit to any LAN device such as network cards or hubs as this may damage the AC155A and/or the LAN device. Use EIA/TIA 568B standard 
AC504A-WP, Mini-Cat5 Extender Wallplate Transmitter specifications
The Black Box Mini-Cat5 Extender Wallplate Transmitter, AC504A-WP, is an innovative solution designed for efficient and seamless transmission of audio and video signals over long distances. This product is ideal for a variety of applications, including conference rooms, classrooms, and residential settings, where high-quality signal distribution is imperative.One of the standout features of the AC504A-WP is its compact wallplate design, which integrates elegantly into any environment without taking up significant space. The wallplate design not only offers a cleaner appearance but also simplifies installation, making it easier for users to connect devices directly to a wall outlet.
The AC504A-WP utilizes advanced Cat5 technology, allowing it to extend HDMI signals up to 100 meters (328 feet) using standard Cat5e or Cat6 cabling. This capability eliminates the need for long HDMI cables, which can often lead to signal degradation over distance. The extender supports resolutions up to 1080p, ensuring that users can enjoy high-definition video quality without compromise.
In addition to video transmission, the Black Box Mini-Cat5 Extender enables the ability to convey multi-channel audio signals. This feature is particularly useful for systems requiring rich audio experiences alongside high-quality video output. The device also supports various audio formats, making it highly versatile for different setups.
Technologically, the AC504A-WP is designed with plug-and-play functionality, which allows for quick and easy setup without the need for complex configuration. This user-friendly design is especially beneficial for non-technical users who may not be familiar with AV systems.
The AC504A-WP is equipped with advanced signal conditioning technologies, which include built-in equalization and advanced error correction. This ensures that signal integrity is maintained even over long distances, preventing issues like ghosting or flickering.
Moreover, the unit features a robust build quality and is designed to withstand the rigors of daily use. It is mounted securely to the wall, ensuring that it remains in place without the risk of damage.
Overall, the Black Box Mini-Cat5 Extender Wallplate Transmitter, AC504A-WP, is a powerful and efficient tool for extending HDMI signals in a variety of environments. With its impressive range, high-definition support, and user-friendly setup, it meets the needs of businesses and home users alike, providing a reliable solution for all AV transmission requirements.