Quick tech specs
- 1 GB
- 667 MHz / PC2-5300
- ECC
- for Cisco 1921 4-pair, 1921 ADSL2+, 1921 T1, 19XX, 29XX, 39XX, 39XX ES24
- DIMM 240-pin
- unbuffered
- CDW
Know your gear
This Cisco MEM-2900-1GB compatible 1 GB DRAM upgrade is 100% guaranteed to be compatible with your system and to work right the first time. Adding additional memory is the best way to increase the performance of your system.