--- title: "Are the HDL200 system cables plenum rated?" slug: "are-the-hdl200-system-cables-plenum-rated" description: "Unlock the importance of plenum-rated cables for Nureva HDL200 systems. Learn why compliance with electrical codes is crucial for safe installations." tags: ["Setup", "Installation", "Configuration", "HDL200 system", "FAQ"] updated: 2026-08-18T22:25:55Z published: 2026-08-18T22:25:55Z canonical: "support.nureva.com/are-the-hdl200-system-cables-plenum-rated" --- > ## Documentation Index > Fetch the complete documentation index at: https://support.nureva.com/llms.txt > Use this file to discover all available pages before exploring further. # Are the HDL200 system cables plenum rated? The cables supplied with Nureva® HDL200 systems **are not plenum rated**. For installations that require plenum-rated cables, it’s recommended material/cabling is used in accordance with the applicable national, regional and local electrical codes or ordinances. ## What is a plenum? A plenum is an air-filled space within a structure. The most common type of plenum that Nureva conferencing systems are used with is the open space above the ceiling. ## What does plenum rated mean? Air travels throughout a building via plenum spaces, constantly circulating. With this circulation, there is the potential for smoke or toxic fumes to move through the plenums of a building. *Plenum rated* means that the cables are designed to meet a specific standard to restrict the spread of fire and limit the amount of smoke or fumes emitted during a fire. ## Plenum-rated USB cable or plenum-rated Ethernet cable? The HDL200 system has a USB cable that connects it to the computer. Plenum-rated USB cables can be hard to find and are often quite expensive. An alternative is to use a single-cable USB over Ethernet extender solution. The Ethernet cable between the transmitter and receiver would be a plenum-rated Ethernet cable. Plenum-rated Ethernet cables are generally easier to find. [Can I use a USB extender with the HDL200 system?](https://support.nureva.com/docs/are-the-hdl200-system-cables-plenum-rated)