UNO-4683 is a fanless substation computer that’s IEC 61850-3 and IEEE 1613 certified. It comes with an Intel Core i7 processor, compact 2U, rack-mount form factor, dual power input and advanced computing. It has six Ethernet ports, six USB ports and two RS-232/422/485 isolated serial ports. The UNOP-1624D I/O module is a four-port isolated RS-232/422/485 card with IRIG B support.