• Cisco MEM-4400-4GU8G 4GB DDR4 RAM module with green PCB
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Cisco

Cisco MEM-4400-4GU8G | ISR 4400 Router DRAM Memory, 4G to 8G Upgrade (4G+4G)

MEM-4400-4GU8G

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Description

This DRAM upgrade is a control-plane memory option for the Cisco 4000 Series Integrated Services Routers (ISR 4400). It takes the router from the default 4 GB of control-plane memory to 8 GB, and suits branch and WAN edge deployments that need more headroom for services, routing tables and IOS XE features.

The upgrade is a 4G to 8G step, resulting in a symmetrical 4G+4G DIMM configuration. The ISR 4400 control-plane DIMM slots must be populated with matching DIMMs of the same type and density, so mixed densities and single-slot population are not supported. It replaces the default MEM-4400-4G (2G+2G) module, while the data-plane DRAM stays at the default 2 GB (MEM-4400-DP-2G).

The MEM-4400 family also includes other upgrade paths, such as MEM-4400-4GU16G and MEM-4400-8GU16G, for buyers who need to go beyond 8 GB. The memory itself does not require a licence.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Raises ISR 4400 control-plane DRAM from 4 GB to 8 GB
- Adds headroom for services, routing tables and IOS XE features
- Symmetrical 4G+4G DIMM population for consistent performance
- Part of the ISR 4400 DRAM upgrade path alongside 16 GB options
- No licence required for the memory

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Product type: Router control-plane DRAM upgrade
- Upgrade path: 4 GB to 8 GB DRAM (4G+4G)
- Resulting control-plane DRAM: 8 GB (4G+4G)
- Resulting configuration: 2 x 4 GB DIMMs, symmetrical
- Default memory replaced: MEM-4400-4G, 4 GB DRAM (2G+2G)
- Data-plane DRAM (unchanged): MEM-4400-DP-2G, 2 GB
- DIMM population rule: both memory slots populated with symmetrical DIMMs of the same type and density
- Mixed DIMM densities or single-slot population: not supported
- Platform: Cisco ISR 4400 series
- Licence: none required for the memory itself

FAQs

Q: Does this memory upgrade need a licence?
A: No. The DRAM module itself does not require a licence.

Q: Why is it described as 4G+4G?
A: The ISR 4400 control-plane has two DIMM slots that must be populated with matching DIMMs. The 8 GB configuration is therefore two 4 GB DIMMs.

Q: Can I fit a single DIMM or mix different DIMM sizes?
A: No. Both slots must be populated with symmetrical DIMMs of the same type and density. Single-slot population and mixed densities are not supported.

Q: Which memory does this upgrade replace?
A: It takes the router from the default MEM-4400-4G (4 GB as 2G+2G) up to 8 GB as 4G+4G.

Q: What other upgrade options are in the same family?
A: MEM-4400-4GU16G (4G to 16G) and MEM-4400-8GU16G (8G to 16G) cover larger memory configurations. MEM-4400-4G= and MEM-4400-8G= are the single-DIMM spares.

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