Comtrol RocketPort RM16-RJ45

Comtrol RocketPort RM16-RJ45 Rackmount Interface 99420-6 300168 RP IFC RS 422. It features 16 RJ45 connections, communications speeds up to 460 Kbps, and a standard 1U 19″IT equipment rack. 

Compatible with RocketPort INFINITY and EXPRESS 16-Port Serial Cards

Standard 1U 19″ rackmounting

RS-232/422/485 software-selectable ports

Communications speeds up to 460Kbps

I have two of these for sale