1-11: IntroductionThe Lantronix MSS family of Device Servers allows you to network-enable a variety ofserial devices that were not originally designed to be networked: personal computers,terminals, modems, industrial machinery, and more. This capability brings the advantagesof remote management and data accessibility to thousands of serial devices.The MSS4 offers a solution for almost every networking need. All MSS4 models providefour serial ports, which are capable of RS-232, RS-422, and RS-485 communications, anda 10/100BASE-T Ethernet port. In addition, certain models of the MSS4 include a100BASE-FX fiber link Ethernet port and two PC card slots. The slots can be used for802.11 wireless Ethernet, flash storage, and modem cards.Note: For a current list of supported PC card technologies, please check theLantronix Web site, www.lantronix.com.Parts of this manual assume knowledge of the IEEE 802.11 Standard governing wirelessnetworking. If you are not familiar with wireless networking concepts and implementation,please refer to the Standard or the documentation that came with your wireless PC card.Throughout this manual, the MSS4 may be referred to as the MSS or as the Server.1.1 Model OverviewThere are four MSS4 models, designated as -D, -S, -DFP, and -SFP. The models aredifferentiated by whether or not they have a DB9 serial connector, screw terminal blocks,PC card slots, and fiber link Ethernet.Table 1-1: MSS4 Models At-A-GlanceFeature MSS4-D MSS4-S MSS4-DFP MSS4-SFPDB9 Serial Ports 4 0 4 0Screw Terminal Ports 0 4 0 4PC Card Slots 0 0 2 2Fiber Link Ethernet(100BASE-FX)No No Yes Yes