The QFX5100-FAN-AFO is a fan tray module designed for Juniper’s QFX5100 series switches, providing front‑to‑back airflow to enhance internal cooling performance. This module replaces or supplements existing fan trays, ensuring that hot air is efficiently drawn from the front of the chassis and expelled from the rear, thereby maintaining optimal operating temperatures for high‑density switch deployments. Compatible with the QFX5100 platform, it supports the standard fan tray form factor and is engineered to integrate seamlessly into existing rack‑mounted switch configurations, helping to preserve reliability and extend component lifespan.