Quick tech specs
- 4 GB
- for Cisco 1921
- 1921 ADSL2+
- 2901
- 2921
- 3925
- CompactFlash
- 1921 4-pair
- 1941
- 2911
- 2951
- 3945
Know your gear
This Cisco MEM-CF-256U4GB compatible 4GB 68-pin factory original Compact Flash is 100% guaranteed to be compatible with your system and to work right the first time. All of our server memory is built to strict JEDEC standards at one of the tier 1 facilities (Samsung, Micron, or Hynix). Our products are also guaranteed by federal law to not affect or void OEM warranties.