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Flash upgrade expanded storage and simplified IOS management.
MEM-FLSH-8GU16G
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8G TO 16G FLASH MEM UPG FOR ISR 4400
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Name:
MEM-FLSH-8GU16G
- Description:
- 8G TO 16G FLASH MEM UPG FOR ISR 4400
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- Condition:
- Warranty:
- 3
- List Price:
$1,774.00
- Price:
$78.0095.6% off
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1
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MEM-FLSH-8GU16G Overview
MEM-FLSH-8GU16G is a DDR4 UDIMM memory module designed for desktop applications, featuring a speed of 3200 MHz, CL16 latency, and operating at 1.35V. This module comes in an 8 GB capacity with a single-channel kit configuration and is non-ECC and unbuffered, ensuring compatibility primarily with desktop systems.
This product is engineered with a built-in heatspreader to provide optimal thermal performance and is tailored for gaming and workstation builds. While it does not offer RGB lighting, its design focuses on delivering reliable performance for users seeking stability and speed in everyday compute tasks.
MEM-FLSH-8GU16G price is $78.00, a 95.6% saving from the Cisco list price of $1,774.00. MEM-FLSH-8GU16G is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-FLSH-8GU16G for additional pricing. Browse the full Isr 4000 Memory & Flash series or explore all Cisco products.
MEM-FLSH-8GU16G Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 8 GB
- Compatible Platforms
- Desktop
- Compatible Systems
- Workstation
- Form Factor
- UDIMM
- Kit Configuration
- Single Channel
- Speed
- 3200 MHz
- Operating Temperature
- N/A
- Reliability Rating
- Standard
- CAS Latency (CL)
- CL16
- Voltage
- 1.35V
- ECC Support
- No
- Registered/Buffered
- Unbuffered
- XMP Support
- Intel XMP 2.0
- RGB Lighting
- No
- Heatsink / Heatspreader
- Yes
- Intel Platform Support
- N/A
- AMD Platform Support
- N/A
- Use Case
- Gaming
- Product Name
- MEM-FLSH-8GU16G
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
MEM-FLSH-8GU16G Use Case
Enhanced Compliance and Security Logging in Financial Institutions
Scenario: A global banking group deploys Cisco ISR 4400 routers at 200 branch locations to meet stringent PCI DSS and SOX audit requirements. By installing the MEM-FLSH-8GU16G flash memory upgrade (8 GB to 16 GB), each ISR 4400 can retain extended syslog files, capture deep packet inspection data, and store full security event logs on-device. Benefit: Delivers up to 2× longer log retention for on-premises forensics, accelerates security incident response, ensures continuous compliance with financial regulations, and reduces external storage costs by 30%.
High-Performance SD-WAN Orchestration for Distributed Retail
Scenario: A nationwide retail chain uses Cisco SD-WAN on ISR 4400 routers to optimize customer Wi-Fi, payment systems, and inventory updates across 500 stores. Upgrading flash memory to 16 GB with MEM-FLSH-8GU16G enables storage of multiple IOS XE images, dynamic overlay policies, and local data caching for real-time analytics. Benefit: Achieves 40% faster site commissioning, reduces WAN failover times by 60%, and supports seamless software upgrades—driving improved application performance and a 25% lift in customer satisfaction.
Edge NFV and IoT Service Hosting in Manufacturing Facilities
Scenario: An industrial manufacturer deploys ISR 4400 routers at multiple production plants to host virtualized firewalls, WAN optimizers, and IoT gateways. With the MEM-FLSH-8GU16G upgrade to 16 GB flash, each router runs containerized network functions (VNFs) and local telemetry agents for machine-to-machine communications. Benefit: Consolidates edge services on a single platform, reduces hardware footprint by 50%, enables real-time OT/IT data processing, and accelerates network deployments—resulting in a 35% decrease in operational overhead.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| MEM-FLSH-8GU16G |  MEM-FLASH-32G |  MEM-4400-2G |  MEM-4400-4G |  MEM-4400-8G | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR4 |
| Capacity | 8 GB | 32 GB | 4 GB | 4 GB | 8 GB |
| Compatible Platforms | Desktop | Desktop / Laptop / Server | Desktop / Laptop | Desktop / Laptop / Server | Desktop |
| Compatible Systems | Workstation | Workstation | N/A | Workstation | N/A |
| Form Factor | UDIMM | UDIMM | SODIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Dual Channel | Single Channel | Single Channel | Single Channel |
| Speed | 3200 MHz | 3200 MHz | 4000 MHz | 4000 MHz | 3200 MHz |
| Operating Temperature | N/A | N/A | N/A | N/A | N/A |
| Reliability Rating | Standard | Standard | Standard | Standard | Standard |
| CAS Latency (CL) | CL16 | CL16 | CL16 | CL16 | CL19 |
| Voltage | 1.35V | 1.35V | 1.35V | 1.35V | 1.35V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | Yes |
| Intel Platform Support | N/A | Intel 13th Gen | Intel 10th Gen | Intel 10th Gen | Intel 12th Gen |
| AMD Platform Support | N/A | AMD Ryzen 5000 | AMD Ryzen 3000 | AMD Ryzen 3000 | AMD Ryzen 5000 |
| Use Case | Gaming | Gaming | General Use | Gaming | Gaming |
| Product Name | MEM-FLSH-8GU16G | MEM-FLASH-32G | MEM-4400-2G DDR4 SODIMM Memory Module | MEM-4400-4G | MEM-4400-8G |
| Height | N/A | 1.2 inches | 0.5 inches | 1.2 inches | 1.4 inches |
| Width | N/A | 5.3 inches | 2.75 inches | 3.0 inches | 5.3 inches |
| Depth | N/A | 0.5 inches | 1.18 inches | 0.5 inches | 0.5 inches |
| Weight | N/A | 0.3 lbs | 0.12 lbs | 0.1 lbs | 0.3 lbs |
Reviews & Ratings
N
Noah Prescott
5
Cisco flash worked flawlessly in ISR 4400.
L
Luke Harrington
5
Smooth upgrade with reliable performance.
C
Caleb Winters
5
Good option for increasing flash capacity.
A
Andrew Wallace
5
Consistent storage performance since installation.
Questions & Answers
What is the MEM-FLSH-8GU16G flash memory upgrade?
The MEM-FLSH-8GU16G is a Cisco-certified module that upgrades ISR 4400 series flash memory from 8 GB to 16 GB, doubling storage capacity for IOS images, logs, and configurations.
Which ISR 4400 routers support the MEM-FLSH-8GU16G upgrade?
The MEM-FLSH-8GU16G is fully compatible with all Cisco ISR 4400 models (4431, 4451, 4461) running supported IOS XE releases.
How does the 8 GB to 16 GB upgrade improve router performance?
By increasing flash capacity, the upgrade enables larger IOS images, extensive logging and advanced feature sets without storage constraints, improving overall throughput and stability.
Is installation of the MEM-FLSH-8GU16G upgrade straightforward?
Yes. Installation involves hot-swapping the existing flash module, inserting the new 16 GB card, and verifying with standard CLI commands—no special tools required.