The SmartBits 600B is a portable network performance testing system that features high-port density. Designed for network equipment manufacturers, telcos and ISPs, evaluation labs, and enterprise users, the SMB-600 holds up to two modules that can support a mixture of port types. Units can be daisy-chained together to achieve higher port density. Modules available to support 10/100/1000 Base Ethernet, 10GBase, OC-3 to OC-192 POS, and Fibre Channel applications.