With the production of the Cisco MEM-3900-1GB Memory - 1 GB - DIMM 240-pin very low profile DDR2 registered ECC, Cisco offers the widest line of explanations for transferring data, voice and video in buildings, across precincts, or around the globe. Cisco MEM-3900-1GB Memory - 1 GB - DIMM 240-pin very low profile - DDR2 - registered - ECC memory resolutions ensure that systems both public and private function with maximum routine, security, and suppleness. The Cisco MEM-3900-1GB Memory - 1 GB - DIMM 240-pin very low profile DDR2 registered ECC is designed for the Cisco 3925, 3925E, 3945, 3945E.