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  1. 256MB (1)
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  1. RamCity (1)
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  1. CompactFlash Card (1)
 

RamCity guarantees 100% that all modules below are compatible with the Cisco Router 2821/2851

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We guarantee your memory upgrade will be 100% compatible, or return it within 1 Whole Year for a full refund.
Need some help installing your upgrade? See our guides and videos.
System Specifications
Standard Memory:
  • 64MB (Removable) Compact Flash
  • 256MB (Removable) DRAM
Maximum Memory:
  • 512MB for Compact Flash
  • 1GB for DRAM
Expansion:
  • 2 Sockets for DRAM 1 Slot for Compact Flash
Bus Architecture:
  • Proprietary
Mfr's System P/N's:
  • CISCO2821; CISCO2851