Huawei USG12004-AC-B03 is a modular security appliance designed for enterprise gateway and data center perimeter defense. This unit supports redundant AC power supplies and accommodates multiple interface modules for flexible network connectivity, enabling aggregation of high-throughput traffic across distributed branch offices or campus networks. Compatible with Huawei's modular USG12000 series ecosystem, it provides stateful firewall, intrusion prevention, VPN, and application control capabilities. Typical deployments include enterprise WAN consolidation, multi-site branch connectivity, and data center north-south traffic inspection. The modular architecture allows customization of network interfaces and security services based on specific deployment requirements. All units are tested and guaranteed, available via quote.