Move legacy serial equipment onto modern network infrastructure without adding a separate power supply. The Brainboxes ES-446 delivers RS-232 connectivity over Ethernet with Power over Ethernet support, reducing cabling complexity and making it easier to place serial devices where they are needed. Its DIN rail mountable form factor is a strong fit for control panels, automation cabinets, and distributed industrial systems where space, serviceability, and secure mounting matter. By combining network transport and power delivery in one connection, the ES-446 helps simplify installations that would otherwise require extra adapters, outlets, or local power planning. For teams extending the life of serial equipment, this model offers a cleaner path than low-cost converters that depend on fragile power arrangements or desktop placement. The result is a more disciplined deployment for RS-232 endpoints that need to stay reachable, powered, and integrated into Ethernet-based operations.