MODULR BRANCH OFF RTR 4PT 10/100BTX PLUS PIC SL The AT-AR415S is a secure modular router offering performance, flexibility and security for small to medium-sized business. Packaged in a compact one-rack unit chassis, this versatile router provides five 10/100 Fast Ethernet interfaces and supports a variety of Port Interface Cards (PICs). For the WAN network, the AT-AR415S features one 10/100Mbps Ethernet Port. Also offered is an asynchronous port, and four Layer 2-switched LAN ports - any of which can also be reconfigured as a DMZ.