Digi Connect EZ 16 - Serial Server, 16-port, RS-232, US Power Cord - 256 MB - Twisted Pair, Optical Fiber - 2 Total Expansion Slot(s) - 2 x Network (RJ-45) - 2 x USB - 16 x Serial Port - 10/100/1000Base-T, 10GBase-X - 10 Gigabit Ethernet - Management Port