The RUGGEDCOM RS400 is an industrially hardened, serial device server with an integrated, fully managed, Ethernet switch, designed to operate reliably in electrically harsh and climatically demanding environments. 128-bit Encryption; 4 port serial server, 4 port managed Ethernet switch & an optional V.90 modem 48 VDC (36-59 VDC) XX = No power module 2 P = Panel Mounting xx = none XX = Manufacturing modification: none MTMT = 100FX multimode ST 2 = 4x RS232 via DB9 XX = No modem