MEM-CF-256U4GB, Cisco Compact Flash Memory, 256MB-4GB capacity/For 1900 2900 3900/Upgrade card

  • Brand: Cisco
  • Model: MEM-CF-256U4GB
Rating:
80%
4/5.0
List Price: $1,656.00
57% OFF
$720.00
  • 100% Genuine
    100% Genuine
    Original, factory-verified
    3-Year Warranty
    3-Year Warranty
    Extended, enterprise-grade
    23 Years Expertise
    24 Years Expertise
    Proven, deployment-focused
  • Condition
    • Original New · Covered SN
    Express Shipping to United States Get Shipping Estimate
    Estimated shipping time: 2–6 business days via DHL, FedEx, UPS and more
    expert
    Certified Expertise Builds Trust
    CCIE · JNCIE · NSE7 · ACDX · HPE Master ASE · Dell Server/AI Expert
    • Faster Delivery, Globally Ready

      Faster Delivery, Globally Ready

      20+ years of supply chain expertise for faster multi-stop delivery with smooth customs.

      48H Worldwide Shipping
      10+ Global Warehouses
    • Keep Projects On Time

      Keep Projects On Time

      Reliable availability and real-time shipment visibility to keep every critical IT project on schedule.

    • Leading Global Distributor Since 2002

      Leading Global Distributor
      Since 2002

      A global ICT bridge delivering authentic hardware and trusted service for over 20 years.

        21500+ Enterprise Clients Served200+ Countries & Regions Covered
    • Worry-Free Coverage with RSCare

      Worry-Free Coverage with RSCare

      3-Year warranty for enterprise hardware, including advanced RMA, diagnostics, spare parts support, and OEM service compatibility.

      Cisco SmartNet
      HPE Foundation Care
      Dell ProSupport
      Juniper Care
      Fortinet Support
    • Your Trusted Genuine Source

      Your Trusted Genuine Source

      Authorized partnerships with 30+ brands, including Cisco, HPE, Dell, Juniper, and Fortinet.

      100% Authentic Products
      100,000+ Multi-Brand SKUs Available
    Overview

    Cisco MEM-CF-256U4GB Overview

    The Cisco MEM-CF-256U4GB is a compact flash memory upgrade card designed for enterprise-class Cisco 1900, 2900, and 3900 Series routers. This plug-in module expands flash memory from 256MB to 4GB, providing additional space for Cisco IOS images, logs, and configurations. With reliable flash memory technology, it enhances router performance and stability for distributed branch networks across Asia, Europe, Africa, and North America, making it ideal for distributors, SMB integrators, and end users seeking scalable storage.

    Product Highlights

    4GB
    Flash Capacity
    256MB
    Legacy Start
    CF
    Flash Type

    Product Applications Scenarios

    Enterprise Network
    Expands router flash to store larger IOS images and configs, improving reliability for branch WAN, often cutting upgrade trips by up to 30%.
    Service Providers
    Enables scalable image and log storage on CPE routers, helping providers standardize builds and reduce onsite maintenance by around 20%.
    Edge & IoT
    Provides durable flash for IOS, scripts, and local logs on edge routers, improving resilience in remote IoT sites and reducing outages significantly.

    Product Features Comparison

      Cisco Cisco Cisco Cisco
    Model MEM-CF-256U4GB MEM-CF-256MB= MEM-CF-512MB= MEM-CF-4GB
    Brand Cisco Cisco Cisco Cisco
    Capacity 4GB 256 MB 512MB 4 GB
    Memory Type Flash Memory n/a n/a Flash
    Frequency n/a n/a n/a n/a
    Voltage Not Specified n/a Operating Voltage: 3.3V or 5V 3.3 V or 5 V
    Device Compatibility Cisco 1900, 2900, 3900 Series Routers Cisco 1900, 2900, 3900 ISR Cisco 1900, 2900, 3900 ISR Cisco network devices

    Optional Add-ons

    Model Number Description
    MEM-CF-256MB= Cisco 256MB CompactFlash card for ISR 1900/2900/3900 system boot storage.
    MEM-CF-512MB= Cisco 512MB CompactFlash module for 1900/2900/3900 ISR routers, higher CF capacity.
    MEM-1900-1GB= Cisco 1GB DRAM DIMM spare for 1900 Series ISR router main memory expansion.

    Quality Certifications

    • ISO 14001
    • ISO 9001
    • RoHS
    • REACH
    • CE
    • FCC
    Specification

    Cisco MEM-CF-256U4GB Specification

    Model
    MEM-CF-256U4GB
    Brand
    Cisco
    Compatible with Models
    Cisco 1900, 2900, 3900 Series Routers
    Upgrade From
    256MB Compact Flash
    Upgrade To
    4GB Compact Flash
    Flash Type
    Compact Flash (CF)
    Capacity
    4GB
    Minimum Operating System
    Depends on Cisco Router Model and Configuration
    Form Factor
    Plug-in module
    Dimensions
    Not Specified
    Voltage
    Not Specified
    Technology
    Flash Memory
    Use Case
    Memory expansion for increased network performance
    Features
    High durability and reliability for networking environments
    Package Content
    1 x MEM-CF-256U4GB Compact Flash Upgrade
    Product Condition
    Brand New
    Compliance Standards
    Not Specified
    Advantages
    Easy installation, Enhanced storage capacity, Superior performance
    Weight
    0.5 kg

    Get more information

    Discover unbeatable prices and fast shipping for the MEM-CF-256U4GB, Cisco Compact Flash Memory, 256MB-4GB capacity/For 1900 2900 3900/Upgrade card . Access the detailed MEM-CF-256U4GB, Cisco Compact Flash Memory, 256MB-4GB capacity/For 1900 2900 3900/Upgrade card datasheet and ensure you're getting the best deal with our reliable delivery service. Need assistance? Our free live chat support is here to help. For more information about the product and pricing, contact us via live chat or email us at [email protected].

    Quality Certifications

    Need Help? Technical Experts Available Now.

    • +1-626-655-0998 (USA)
      UTC 15:00-00:00
    • +852-2592-5389 (HK)
      UTC 00:00-09:00
    • +852-2592-5411 (HK)
      UTC 06:00-15:00
    Need Help? Technical Experts Available Now.
    Q&A

    Questions & Answers

    What accessories are available for the MEM-CF-256U4GB?

    Accessories for the MEM-CF-256U4GB typically include Compact Flash card adapters and protective cases that ensure safe handling and storage of your flash memory.

    How does the MEM-CF-256U4GB compare to other similar memory upgrades?

    The MEM-CF-256U4GB stands out for its compatibility with Cisco 1900, 2900, and 3900 series routers, reliable performance, and range of storage capacities, making it a versatile and dependable choice.

    What are the benefits of upgrading to the MEM-CF-256U4GB Compact Flash from the standard memory?

    Upgrading to MEM-CF-256U4GB offers increased storage capacity, enhanced performance, and the ability to store larger IOS images, system logs, and configuration files, improving the overall efficiency of your Cisco routers.

    Are the products sold on router-switch.com authentic?

    Yes, router-switch.com only sells 100% genuine products from authorized brands. As a multi-brand authorized distributor, all items are sourced through official channels and include valid manufacturer warranties. Customers may verify authorization via brand websites or request certification documents.

    Warranty
    • Your Trusted Global ICT Partner

      Delivering reliable, cross-border fulfillment with 20+ years of expertise, backed by rigorous QC, fast logistics, and worldwide warehousing.
      Global warehousing
      Global warehousing
      10+ hubs positioned for fast international dispatch and stable availability.
      Seamless cross-border
      Seamless cross-border
      QC-verified packing and predictable delivery via FedEx, DHL, UPS.
      Your Trusted Global ICT Partner
    • ICT Tools Hub for Confident Monitoring

      ICT Tools Hub for Confident Monitoring

      Stay informed on product lifecycle status and real-time inventory availability—supporting confident planning, sourcing, and operational execution.
      EOL/EOSL Checker
      Verify product lifecycle status to plan purchases and avoid EOL/EOSL risks.
      Request VIP Inventory Portal Access
      Connect via live chat for VIP access to real-time inventory on priority SKUs.
    • Certified Experts Across Leading Vendors

      Professional guidance for network, security & data center builds, delivered by certified experts with extensive, hands-on deployment experience.
      Multi-vendor engineering
      Multi-vendor engineering
      Certified expertise across Cisco, HPE, Aruba, Dell, Juniper, Huawei and Fortinet.
      Deployment-ready guidance
      Deployment-ready guidance
      Faster, safer rollouts with project-focused engineering guidance.
      Certified Experts Across Leading Vendors

    The Choice of 21,500 +Global Customers

    • Ford
    • Disney
    • Nestle
    • Toyota
    • Walmart
    • Philips
    • Ups
    • Huatt
    • Hsbc
    • Novartis
    • Siemens Healthineers
    • Bt
    • Reference Johnson
    • T
    • Att
    • Lgu
    • Sk Telecom
    • Veerizon
    Industry-Leading Warranty Coverage You Can Trust
    • 100% Low Price Guarantee
      100% Low Price Guarantee
      Router-switch.com offers genuine, high-quality ICT products at competitive wholesale prices—ensuring exceptional value without compromising quality.
    • 100% Quality Assurance
      100% Quality Assurance
      All items are brand new, original, and factory-sealed.
      Upon request, each unit can be fully tested and verified by a Cisco CCIE-certified engineer to ensure perfect working condition before shipment.
    • 100% Money-Back Guarantee
      100% Money-Back Guarantee
      If you are not satisfied with your purchase, you may request an exchange or full refund. Our customer service team will guide you through the return process quickly and smoothly.
      Visit Return Policy page for more information.
    • Free Cisco CCIE Technical Support
      Our Cisco CCIE-certified experts provide free professional support via phone, email, online chat, or remote login—helping you deploy and troubleshoot with confidence.
    • Flexible & Secure Payment and Shipping
      Flexible & Secure Payment and Shipping
      We support multiple secure payment and logistics options, backed by industry-leading verification:
      • Pay by wire transfer.
      • Pay with your paypal.
      • Pay with your Visa credit card.
      • Pay with your Mastercard credit card.
      • Pay with your Discover Card.
      • Pay by American Express.
      More
      • mcafee-secure
      • verisign-secured
      • pci-dss
      • ssl-encryption
      Visit How to Pay page for more information
    Warranty Coverage & RMA Instructions
    • Extended, Worry-Free Warranty Coverage
      Extended, Worry-Free Warranty Coverage
      • Factory New Sealed Enterprise Hardware: 3 Years
      • Factory New Sealed Consumer Devices: 1 Year
      Visit Warranty Policy page for more information
    • How to Get Support
      How to Get Support
      If you encounter issues with products, please reach out to your dedicated sales representative. They will assist with diagnostics, remote troubleshooting, and RMA processing if necessary.
      Visit Contact Us page for more support options.

    Best-Fit Solutions for Your Network

    Deploy DeepSeek-V3/R1: Powerful AI, Low Cost

    Deploy DeepSeek-V3/R1: Powerful AI, Low Cost

    Expert-configured AI solution: Same power, 90% savings—multi-scenario flexibility with Dell/Huawei/Lenovo options.

    AI
    Beyond Bandwidth: The 100G+ Data Center Architecture

    Beyond Bandwidth: The 100G+ Data Center Architecture

    The must-have 100G foundation - AI-ready growth, zero-latency performance

    Data Center
    400G/800G Ethernet Switch: Maxmize Margins via AI-Ready Solutions

    400G/800G Ethernet Switch: Maxmize Margins via AI-Ready Solutions

    High-Profit data center switches from Cisco, Huawei, Mellanox & Juniper.

    Ethernet Switch
    Download
    Model Datasheet