The MEM-CF-256U2GB 2GB Flash Memory for Cisco 1900 2900 3900 ISR Series Routers is a high-quality memory upgrade designed specifically for Cisco routers. This single module provides 2GB of memory capacity, ensuring that your router has ample storage space for configurations, firmware, and other data. Made in the United States by the trusted brand Cisco, this flash memory module is compatible with various Cisco router models, offering a reliable and efficient storage solution for your networking needs.