PortBox PL: Serial to Ethernet device server
RS-232/485 serial line - Ethernet converter on TCP/IP and UDP/IP protocol. Built-in virtual serial port support, the remote port can be mapped as for example COM1 in VM using the HW VSP utility. 9-bit support extension, wide support of RS-485 question-answer communication support.A typical application is access a remote technology controlled over RS-232 of RS-485, or serial port prolonging via the Ethernet network.
http://www.hw-group.com/products/converter/index_en.html
Moxa NPort 5100A
The NPort 5100A device servers are designed to make serial devices network-ready in an instant and give your VM direct access to serial devices. The NPort 5100A device servers are ultra lean, ruggedized, and user friendly, making simple and reliable serial to Ethernet solutions possible.
http://www.moxa.com/product/NPort_5100A.htm
