This product is either discontinued or we cannot get that from suppliers.
Cisco C881-K9 Router, Fast Ethernet, Ports-5, Form Factor Desktop, Network 10/100Base-TX, Network (RJ-45) Ports-4, Standard Memory 128 MB, Gray, Memory Technology DRAM, Input Voltage 110 V AC, 220 V AC, Maximum Memory Supported 256MB.
The Cisco® 880 Series Integrated Services Routers (ISRs) combine Internet access, security, voice, and wireless services onto a single, secure device that is simple to use and manage for small businesses.