Three miniPCI slots and three Ethernet ports give you enough connectivity options to use the RB433AH as the central part of your network. In addition to our regular model RB433, the RB433AH version adds more RAM and our popular high-speed Atheros 680MHz CPU making this the perfect universal choice for serious networks. A microSD card gives you the ability to add more storage for Webproxy cache, logs, or Metarouter virtual machines.