Cisco Compatible MEM-4300-4GU8G – 8GB DRAM Upgrade Kit for Cisco ISR 4331 & 4351 Routers

Upgrade your Cisco ISR 4331 or 4351 Series routers with MEM-4300-4GU8G, an 8GB DRAM upgrade kit designed for seamless performance, reliability, and expanded memory capacity. Network MemoryENET offers one of the most comprehensive lines of compatible (-ENC) and approved (-ENA) memory solutions for switches, routers, and servers. All DRAM upgrades are benchmark tested for performance and reliability in advanced memory testing equipment as well as target network devices, ensuring your router delivers faster throughput, more concurrent connections, and smoother operation under heavier workloads. This upgrade kit is ideal for boosting routing throughput, VPN sessions, and overall device responsiveness without replacing your entire unit.

• Compatibility and capacity: 8GB upgrade kit for Cisco ISR 4331 and 4351 Series Routers, delivered as 2x4GB modules to maximize compatibility and upgrade efficiency.
• Reliability and testing: Benchmark-tested DRAM modules engineered for long-term reliability and consistent performance in demanding network environments.
• Easy integration: Designed for straightforward installation with Cisco memory architectures, enabling a smooth upgrade path with minimal downtime when performed by qualified technicians.
• Performance gains: Expands available memory to support more routing processes, larger routing tables, more VPN sessions, and enhanced multi-tasking capabilities in busy networks.
• Value for networks: Extends the life and capabilities of existing Cisco ISR hardware, delivering improved performance without the cost of new hardware.

Technical Details of MEM-4300-4GU8G

• Part Number: MEM-4300-4GU8G
• Capacity: 8GB total (2x4GB modules)
• Memory Type: DRAM upgrade kit designed for Cisco ISR 4331 and 4351 Series Routers
• Module Configuration: 2 x 4GB modules
• Compatibility: Cisco ISR 4331 and 4351 Series Routers (verified for use with official Cisco memory catalog practices)

How to Install MEM-4300-4GU8G

Before you begin, power down the router, unplug all cables, and follow your organization’s safety procedures. Install memory in a clean, static-free work environment. The steps below outline a typical upgrade process for Cisco ISR routers with 2x4GB memory kits like MEM-4300-4GU8G:

Step 1:Power down the Cisco ISR 4331 or 4351 unit and disconnect power sources. Remove the router from its rack or chassis mount if necessary, and open the access panel to reach the memory slots. Ensure you are grounded to prevent static discharge.

Step 2:Carefully locate the existing memory modules. If your device requires installation as an additional upgrade (and not a replacement), identify the correct slots as specified by Cisco’s memory documentation for your exact model. Remove any existing modules if your upgrade design requires it, following the manufacturer’s guidance.

Step 3:Align the 2x4GB memory modules with the slots, ensuring the notches match the slot keys. Gently insert the modules and apply even pressure until the modules click into place and the retention clips lock them securely.

Step 4:Close the chassis cover, reattach the access panel, and reconnect power. Power up the router and allow the system to boot normally. If the device fails to recognize the memory, re-check the seating of the modules and retry the boot process.

Step 5:Verify the upgrade in the router’s operating system. Use the appropriate Cisco commands or hardware health checks to confirm the total memory is now recognized. Look for the expected 8GB total (or 7.5–8GB depending on system reporting) and confirm there are no error indications in the logs. Run a basic traffic test to ensure stability under load.

Note: If you are unfamiliar with router memory installations or if your network depends on high availability, consider performing the upgrade during a maintenance window or with a trained technician. While MEM-4300-4GU8G is designed to be a straightforward upgrade, proper handling, static-safe procedures, and device-specific guidelines are essential to prevent damage and ensure a successful upgrade.

Frequently Asked Questions

Q: Is MEM-4300-4GU8G compatible with Cisco ISR 4331 and 4351 Series routers?
A: Yes. MEM-4300-4GU8G is developed as an 8GB DRAM upgrade kit specifically for the Cisco ISR 4331 and 4351 Series routers and has been tested for compatibility with these platforms.

Q: How much memory does MEM-4300-4GU8G provide?
A: The kit provides a total of 8GB of DRAM, delivered as two 4GB memory modules. This upgrade is intended to expand available memory for more routing processes, VPN sessions, and larger routing tables.

Q: Do I need to replace any existing memory to use MEM-4300-4GU8G?
A: In most cases, MEM-4300-4GU8G is added as an upgrade kit requiring installation in available memory slots. Some installations may involve replacing existing modules depending on the router’s current memory configuration and Cisco’s guidance for your specific model. Always consult your device’s official documentation or a qualified technician.

Q: Will upgrading memory affect network downtime?
A: Upgrades typically require powering down the device, which can result in brief downtime. If your network is production-critical, schedule the upgrade during a maintenance window to minimize impact. Following a proper procedure helps ensure a smooth upgrade with minimal downtime.

Q: What benefits can I expect from upgrading to MEM-4300-4GU8G?
A: Upgrading to 8GB of RAM increases the router’s capacity to handle more concurrent sessions, larger routing tables, and more demanding workloads. This can translate into improved throughput, faster responses to user requests, and better VPN handling, particularly in busy enterprise environments or data centers requiring robust routing performance.

Q: Is MEM-4300-4GU8G tested or validated by Cisco?
A: MEM-4300-4GU8G is described as a compatible and benchmark-tested DRAM upgrade kit aligned with Cisco ISR 4331 and 4351 series compatibility, with testing performed in target network devices to ensure reliability. For official Cisco validation, refer to Cisco’s memory compatibility documentation and approved manufacturer listings.

Q: How can I confirm the upgrade is recognized by the router after installation?
A: After powering the router back on, access the device’s management interface or console and run memory-diagnostic commands (such as show memory or show version equivalents for your platform). Confirm that the total memory reflects the new capacity (approximately 8GB). Check for error messages in the system logs and verify normal operation under typical workloads.