Extend the life of serial equipment while bringing it into IP-based operations. The Advantech EKI-1511-A provides one serial device server port with support for RS-232, RS-422, and RS-485, giving teams a clean path to connect legacy controllers, meters, and instrumentation to Ethernet networks. Built for environments where downtime is expensive and replacement is not always the right answer, this compact device server helps simplify remote access, monitoring, and integration across industrial and facility systems. It is a strong choice when you need a focused, single-port solution rather than a larger multiport unit that adds cost and complexity. For infrastructure teams, the value is precision: one port, the right serial standards, and a form factor suited to control cabinets and distributed edge deployments. That makes it easier to standardize connectivity at the edge while preserving the equipment already validated in the field. When the requirement is to connect one critical serial asset cleanly and reliably, this model delivers exactly that.