StarTech.com 1 Port RS-232 Serial Ethernet IP Adapter (Device Server, Console Server) 0.1152 Mbit/s

Take your serial peripherals to new lengths. With this one-port Ethernet-to-Remote Serial interface converter, your RS-232 serial devices can be placed anywhere on your TCP/IP Ethernet WAN/LAN and still perform as if they were right beside you. It even works over the Internet!
Even at the longest distances, control of your serial devices will be right at your fingertips: the remote serial ports appear alongside your local serial ports in your Windows device manager.
NETRS232_1GB is designed to function seamlessly with your other serial ports for totally transparent operation. Your serial equipment – card scanners, access keypads, bar code scanners, and more – will operate as smoothly as if the serial ports were right inside your computer. For industrial automation, security, Point of Sale, or any time you need reliable, long-range serial communications, the NETRS232_1GB delivers superior performance in any environment.

StarTech.com 1 Port RS-232 Serial Ethernet IP Adapter (Device Server, Console Server), Wired, RJ-45, 0.1152 Mbit/s