During PI installation, ensure that the service ports of the PI face downward before you fix the PI.

This is a mandatory and critical step during the physical installation of a Huawei Power Injector (PI) or Power over Ethernet (PoE) adapter. Orienting the service ports to face downward is essential for environmental protection. This specific orientation prevents the ingress of water, dust, and other debris into the ports, which could otherwise lead to short circuits, corrosion, and eventual equipment failure. This practice ensures the device's Ingress Protection (IP) rating is maintained, safeguarding its operational reliability and longevity, particularly in outdoor or challenging indoor environments.

The statement "False" is incorrect because it disregards a fundamental principle of safe and reliable hardware installation as specified in official vendor guidelines. Failing to orient the ports downward would expose the sensitive electronic components within the ports to environmental hazards, creating a significant risk of damage and service disruption. This is not an optional or aesthetic choice but a functional requirement for proper installation.

1. Huawei Official Documentation: PoE Adapter Hardware Installation Guide. In the section detailing the installation procedure, a standard caution note states: "To ensure that the PoE adapter is waterproof, install it with the network ports facing downwards." This is a recurring instruction across guides for various PoE adapter models used with Huawei WLAN products. (Example Document ID: 31508999, Section: "Installing the PoE Adapter").

2. Huawei Official Documentation: Outdoor APs Hardware Installation Guide. In the chapter covering installation, specifically the section on "Installing a PoE Adapter," diagrams and explicit instructions mandate this orientation. For instance, a typical instruction reads: "Install the PoE adapter on a wall or pole with its cable ports facing downwards." This ensures a natural drip loop for cables and prevents water from running into the connections. (This is a standard instruction found in installation guides for outdoor AP series like the AirEngine 8771-X1T, 6760-X1, etc.).

3. Huawei Official Documentation: AirEngine 5761-21 Access Point Hardware Installation and Maintenance Guide. In the appendix or section describing the installation of power adapters, the procedure consistently illustrates and instructs the installer to "Orient the PoE adapter so that its network ports face downwards." This confirms the practice is standard for indoor-rated equipment as well to protect against accidental spills or high-humidity environments. (Section: "Appendixes > Installing a PoE Adapter").