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 24 VDC (10-36 VDC) XX = No power module 2 P = Panel Mounting xx = none XX = Manufacturing modification: none L2L2 = 100FX singlemode LC, Standard 20km 2 = 4x RS232 via DB9 XX = No modem