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Adequate flash capacity for standard router use.
MEM-CF-512MB=
512MB Compact Flash for Cisco 1900, 2900, 3900 ISR
FEATURED DEAL
Name:
MEM-CF-512MB=
- Description:
- 512MB Compact Flash for Cisco 1900, 2900, 3900 ISR
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 799975926407
- Condition:
- Warranty:
- 3
- List Price:
$690.00
- Price:
$253.0063.3% off
Quantity:
1
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MEM-CF-512MB= Overview
MEM-CF-512MB= is a high-performance DDR4 UDIMM memory module designed with 512 MB capacity, operating at 3200 MHz speed with a low CAS latency of CL16 and a voltage requirement of 1.35V. Its single channel kit configuration is unbuffered and non‐ECC, ensuring compatibility across desktop, laptop, and server platforms while delivering reliable performance.
Engineered for demanding workstation and server builds, MEM-CF-512MB= features an integrated heatsink/heatspreader for enhanced thermal management and stability under load. With support for Intel XMP 2.0 and seamless integration with recent Intel 13th Gen and AMD Ryzen 5000 platforms, this product caters to users seeking robust, high-performance memory for professional and gaming applications.
MEM-CF-512MB= price is $253.00, a 63.3% saving from the Cisco list price of $690.00. MEM-CF-512MB= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-CF-512MB= for additional pricing. Browse the full 1900 & 2900 & 3900 Series Router Flash Memory series or explore all Cisco products.
MEM-CF-512MB= Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 512 MB
- Compatible Platforms
- Desktop / Laptop / Server
- Compatible Systems
- N/A
- 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
- Intel 13th Gen
- AMD Platform Support
- AMD Ryzen 5000
- Use Case
- Workstation
- Product Name
- MEM-CF-512MB=
- Height
- 1.2 inches
- Width
- 5.3 inches
- Depth
- 0.5 inches
- Weight
- 0.25 lbs
MEM-CF-512MB= Use Case
Rapid Firmware Upgrade and Rollback in Branch Offices
In a geographically distributed retail network using Cisco 1900, 2900 and 3900 ISR routers, MEM-CF-512MB= Compact Flash stores dual firmware images for zero-downtime upgrades. When a new IOS release is deployed, routers boot from the secondary image on 512 MB flash while the primary image is updated in the background. In case of failure, the system instantly rolls back to the stable image. Benefit: Minimizes service interruptions, accelerates patch rollout and ensures rapid recovery with dependable firmware redundancy.
On-Device Encrypted Configuration Backup for Compliance
A financial services firm leverages MEM-CF-512MB= Compact Flash on Cisco ISR 1900/2900/3900 platforms to store encrypted backups of critical device configurations and access control lists. Automated scripts periodically push encrypted config snapshots to the 512 MB flash, where they’re hashed and versioned. In regulatory audits, teams retrieve historical configurations directly from the device. Benefit: Ensures audit-ready configuration archiving, strengthens compliance posture and reduces reliance on external storage.
Local Logging and Statistics Cache for DMVPN Hubs
In a multi-site enterprise employing DMVPN on Cisco 2900 and 3900 ISRs, MEM-CF-512MB= Compact Flash is dedicated to buffering NetFlow records, syslogs and performance metrics locally during peak traffic. When connectivity to the central collector is restored, the cached logs are securely forwarded, preventing data loss. Benefit: Improves network visibility, guarantees complete log delivery under intermittent links and optimizes troubleshooting with a reliable on-device statistics archive.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 MEM-CF-512MB= |  MEM-CF-4GB= |  MEM-CF-256U2GB |  MEM-CF-2GB |  MEM-CF-256MB= | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR4 |
| Capacity | 512 MB | 4 GB | 256 GB | 2 GB | 256 GB |
| Compatible Platforms | Desktop / Laptop / Server | Desktop / Laptop / Server | Desktop | Desktop | Desktop / Laptop / Server |
| Compatible Systems | N/A | Workstation | Workstation | Tower Server | Workstation |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Single Channel | Dual Channel | Single Channel | Single Channel |
| Speed | 3200 MHz | 3200 MHz | 3200 MHz | 2400 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 | CL16 |
| Voltage | 1.35V | 1.2V | 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 | No | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | Yes |
| Intel Platform Support | Intel 13th Gen | Intel 12th Gen | Intel 10th Gen | N/A | Intel 12th Gen |
| AMD Platform Support | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 | N/A | AMD Ryzen 5000 |
| Use Case | Workstation | Gaming | Gaming / Workstation | Gaming | Gaming |
| Product Name | MEM-CF-512MB= | MEM-CF-4GB= | MEM-CF-256U2GB | MEM-CF-2GB | MEM-CF-256MB= |
| Height | 1.2 inches | 1.4 inches | 1.18 inches | N/A | 1.2 inches |
| Width | 5.3 inches | 5.3 inches | 5.25 inches | N/A | 5.3 inches |
| Depth | 0.5 inches | 0.5 inches | 0.50 inches | N/A | 0.15 inches |
| Weight | 0.25 lbs | 0.25 lbs | 0.30 lbs | N/A | 0.3 lbs |
Reviews & Ratings
S
Scott Newman
4
Cisco flash memory worked without any errors.
J
Jason Coleman
5
Smooth installation and dependable performance.
P
Philip Turner
3
Good option for older ISR models.
A
Adam Fitzgerald
4
Reliable compact flash with consistent results.
Questions & Answers
What is the MEM-CF-512MB Compact Flash card?
The MEM-CF-512MB is a 512 MB Compact Flash memory module designed for Cisco 1900, 2900 and 3900 Integrated Services Routers (ISR) to store IOS images, configuration files and system logs.
Which Cisco ISR models support the MEM-CF-512MB card?
The MEM-CF-512MB card is fully compatible with Cisco 1900, 2900 and 3900 series Integrated Services Routers that include a Compact Flash slot.
How do I install the 512 MB CF card on my Cisco router?
Power off the router, open the CF slot cover, insert the MEM-CF-512MB card with the gold contacts facing down, close the cover and power on the router.
How do I verify the MEM-CF-512MB is recognized by my router?
Log in to the router CLI and enter the command show flash. The MEM-CF-512MB card will appear as flash0: or similar with 512 MB capacity.