128MB DRAM Cisco 6400 Series (NRP-1) memory
Cisco Router memory expansion
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item number MEM3660-128D, KCS-D3660/128
Shipping time: 
1-3 Days
Important information about your system memory (RAM)
Your system supports only memory modules with selected memory chips. If you think you have found a store for a lower price elsewhere, then it is possible that the cheaper memory chip will not work.
Memory from our website is 100% compatible with your system,
or you get your money back!
or you get your money back!