1U rackmount, 10xGigabit Ethernet, SFP, USB 3. 4GHz CPU, 1GB RAM, RouterOS L5 The RB3011 is a new multi port device, our first to be running an ARM architecture CPU for higher performance than ever before. The RB3011 has 10 Gigabit ports divided into two switch groups, one SFP chassis, and the first is a Superspeed Full-size USB 3. 0 port for added storage or an external 3G /. Need a long-reach fiber connection for your network? This S-31DLC20D SFP transceiver is compatible with MikroTik and other switches that use the same standard. It's a 1000Base-LX module for single-mode fiber, giving you a reliable link for distances up to 20 kilometers.