Layer 2+ Managed Core Fiber Switch. Provide high-density performance and support IPv4 and IPv6 hardware Layer 3 static routing and 24 x 100/1000Base-X mini-GBIC/SFP slots, 8-port 10/100/1000Base-T Gigabit Ethernet RJ-45, shared with Port-1 to Port-8, RJ45 to RS-232 DB9 console interface for basic management and setup slots in a 1U case. With these ideal features, they are able to cross over different VLANs and different IP addresses for the purpose of having a highly-secured, flexible management and long-reach networking application. As a fiber backbone switch, they can flexibly work with suitable SFP transceivers to have a long connection of up to 120km via optic fiber cabling. They are well suited for SMBs, campuses and enterprises for their backbone and workgroup network applications by providing affordability, high performance, long distance and stable transmission quality.