MEM-3900-1GU2GB Cisco 2GB Kit (2 X 1GB) 240-Pin DDR2 DRAM

MEM‑3900‑1GU2GB Specifications

Cisco 2 GB DDR2‑333 MHz DRAM Memory Upgrade Kit for 3900 Series Routers

Manufacturer: Cisco (factory original or approved compatible)
Manufacturer Model: MEM‑3900‑1GU2GB
Product Line: Cisco 3900 Series Router Memory
Product Series: DRAM Upgrade Modules
Product Type: Router DRAM Memory Upgrade Kit
Product Name: Cisco 2 GB (1 GB + 1 GB) Router DRAM Memory Kit

KEY FEATURES:
Total Memory Capacity: 2 GB (1 GB × 2 modules)
Memory Type: DDR2 SDRAM
Memory Speed: 333 MHz (DDR2‑333)
Form Factor: 240‑pin DIMM
Number of Modules: 2 × 1 GB
Error Checking: ECC (Error‑Correcting Code)
Buffered/Registered: Registered (buffered)
Voltage: ~1.8 V typical

PERFORMANCE:
Designed to upgrade memory in Cisco 3900 Series Integrated Services Routers, improving performance by increasing available DRAM for routing, services, and feature processing.

ENVIRONMENTAL & RELIABILITY:
Enterprise‑class router memory, suited for continuous 24×7 operation in Cisco ISR environments. ECC support enhances data integrity and reliability.

PHYSICAL:
Form Factor: 240‑pin DIMM
Typical Dimensions: Standard DIMM size
Weight: ~20–30 g per module (approximate)

COMPATIBILITY:
Intended for Cisco 3900 Series routers such as Cisco 3925, 3925E, 3945, and 3945E ISR platforms when upgrading DRAM from 1 GB to 2 GB.

NOTES:
• This part is a factory memory upgrade option for Cisco 3900 Series platforms; both memory slots must be populated with matching modules for proper operation.
• Third‑party compatible kits are also available that meet JEDEC standards and are approved for use in these routers.