Cisco 4-Port 10BASE-T/100BASE-TX Fast Ethernet Shared Port Adapter, Version 2 - Expansion module - 10/100 Ethernet x 4 - for Cisco 12XXX, 7603, 7604, 7606, 7609, 7613; XR 12XXX

The Cisco 4- and 8-Port FE SPAs are available on high-end Cisco routing platforms, offering the benefits of network scalability with lower initial costs and ease of upgrades. The Cisco SPA/SIP portfolio continues the company's focus on investment protection along with consistent feature support, broad interface availability, and the latest technology. The Cisco SPA/SIP portfolio allows deployment of different interfaces on the same interface processor. Fast Ethernet interfaces are commonly used to interconnect routers or other devices within a central office or data center or in a metropolitan-area network (MAN). With Cisco FE SPAs, users can mix and match SPA ports with other types of interfaces in the same slot. Each SPA provides standards-based Fast Ethernet implementation for compatibility and interoperability.