Name:

MEM-2900-512U2.5GB

Description:
512MB to 2.5GB DRAM Upgrade (2GB+512MB) for Cisco 2901-2921
Rating:
0 (0) Add To Cart Times Like

Added to cart 38 times recently

Availability:

In stock - Ready to Ship Right Arrow

Brand:
Cisco
Condition:
GTIN:
11411535517 Gtin Tool Tip
Warranty:

3 Year Tag Right Arrow

3
List Price:
List I Img

Price:

Quantity:

1

Business price:

Business Price Img

Enroll your business for free

3year Warranty

3 Year Extended Warranty

Right Arrow
Same Day Ship Img

Same-day Shipping

Right Arrow
Day Guarantee

14-Day Money Back Guarantee

Right Arrow

Need Additional Discount on Product?

Request a quote below - Get Exclusive Pricing and Support.

Qty:

Exclusive Bulk Discounts tailored to your order size

Priority Processing with a dedicated account manager

Fast Response: Get your custom quote within 5-10 minutes during business hours (Mon-Fri, 6:00 AM – 6:00 PM PST)

Holiday Bonus: Submissions on holidays receive priority handling the next business day

Shipping:

Product Details Aside Shipping Img

Payment:

Product Details Aside Payment Img

Shipping as per your need

Same-day Shipping

30 Days Return

Express Delivery Across the USA

Need it fast? Choose Express Shipping and receive your order within 1–3 business days.

30 Days Return

Free Ground Shipping Available

Standard ground delivery across the U.S. takes 2–6 days, depending on your location — no extra charge.

30 Days Return

International Shipments Made Simple

For all international orders, we ship via your UPS, FedEx, or DHL account — or to your U.S.-based freight forwarder.

Delivery Timelines

30 Days Return

Under 100 KG? Ships Express.

Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.

30 Days Return

Over 100 KG? Ships via Freight.

Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.

30 Days Return

Always Delivered to Your Door

Every shipment is delivered directly to your address — regardless of country or carrier.

Our best-in-class warranties

3-Year Extended Warranty

30 Days Return

Extended protection, enterprise-grade.

All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.

30 Days Return

Professional repairs & replacements.

If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.

30 Days Return

RMA process, simplified.

Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.

Service Boundaries & Exclusions

30 Days Return

What’s covered — and what’s best avoided.

Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.

30 Days Return

Know your location’s service type.

In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.

30 Days Return

Minimal documentation required.

To initiate service, just submit the invoice and warranty card — no red tape, no waiting.

14-Day Money Back Guarantee

Free 14-Day Returns

30 Days Return

Tested it, but it’s not a fit?

Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.

30 Days Return

Initiate returns with ease.

Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.

30 Days Return

Refund or restock, your call.

Changed your mind? Get a refund (restocking fees may apply) or swap with another product.

30-Day Hardware Replacement

30 Days Return

Covered for any early faults.

All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.

30 Days Return

Replacements shipped in 10 days or less.

Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.

30 Days Return

RMA protocol keeps it smooth.

Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.

MEM-2900-512U2.5GB

512MB to 2.5GB DRAM Upgrade (2GB+512MB) for Cisco...

$606.99

$315.64

41 in Global Warehouse Global Warehouse Img

$315.64

48% off

TRUSTED, TRIED, PROVEN

Trusted Proven Logo 1 1
Trusted Proven Logo 2 1
Trusted Proven Logo 3 1
Trusted Proven Logo 4 1
Trusted Proven Logo 5 1
Trusted Proven Logo 6 1
Trusted Proven Logo 7 1

$5,000,000+ Inventory Delivered By

Delivery Company Img 1

Officially Accredited & Verified By

Delivery Company Img 2

Next-Gen IT Solutions Powered By

Delivery Company Img 3

MEM-2900-512U2.5GB Use Case

Scalable Unified Communications with MEM-2900-512U2.5GB DRAM Upgrade for Cisco 2901-2921

In a 200-user branch office running Cisco Unified Communications Manager on a Cisco 2901, the MEM-2900-512U2.5GB to 2.5GB DRAM Upgrade eliminates voice jitter and one-way audio during peak conferencing sessions. By expanding to 2.5 GB of DRAM, the router buffers high-volume RTP streams, supports 150+ concurrent calls, and unlocks advanced video and collaboration features. Outcome: 30% fewer dropped calls, crystal-clear audio/video quality, and future-proof UC performance.

High-Throughput Security and Threat Defense via 2.5 GB DRAM for Cisco 2921

A retail chain deploys Cisco 2921 routers with ASA firewall modules at 50+ locations. Upgrading with MEM-2900-512U2.5GB-512MB to 2.5 GB DRAM enables deep packet inspection, SSL decryption, and multi-context VPNs without throughput degradation. Result: firewall throughput rises by 40%, threat-signature updates process in real time, and PCI-DSS compliance is maintained under peak shopping loads.

Accelerated Site-to-Site and Remote VPN at 2.5 GB DRAM on Cisco 2901

An engineering firm uses Cisco 2901 routers for 100+ IPsec tunnels connecting global R&D centers. Installing the MEM-2900-512U2.5GB DRAM upgrade boosts encryption/decryption buffers, eliminating CPU stalls during high-volume key exchanges. Benefit: VPN throughput doubles to 200 Mbps, latency drops by 25%, and remote teams experience uninterrupted, low-lag access to CAD and SCM systems.

Product Comparison Table

512MB to 4GB DRAM Upgrade (2 2GB DIMM) for Cisco 2951 ISR
MEM-2951-512U4GB

1 GB DRAM (1 DIMM) for Cisco 2901, 2911, 2921 ISR, Spare
MEM-2900-1GB=

512MB to 2.5GB DRAM Upgrade (2GB+512MB) for Cisco 2901-2921
MEM-2900-512U2.5GB

UPG 1GB KIT 2X512MB FROM 512MB DRAM FOR CISCO 2901-2921
MEM-2900-512U1GB

UPG 1.5GB FROM 512MB DRAM 1GB+512MB FOR 2951 ISR
MEM-2951-512U1.5GB

AMD Platform Support AMD Ryzen 5000 N/A AMD EPYC N/A AMD Ryzen 5000
Capacity 4 GB 1 GB 512 GB 512 GB 512 GB
CAS Latency (CL) CL16 CL11 CL16 CL16 CL16
Compatible Platforms Desktop / Laptop / Server Desktop Desktop / Server Desktop / Server Desktop / Laptop / Server
Compatible Systems Workstation N/A Rack Server N/A Workstation
Depth 0.5 inches 0.2 inches 0.3 inches N/A 0.5 inches
ECC Support No No No No No
Form Factor UDIMM UDIMM UDIMM UDIMM UDIMM
Heatsink / Heatspreader Yes Yes Yes Yes Yes
Height 1.2 inches 1.2 inches 1.2 inches N/A 1.4 inches
Intel Platform Support Intel 10th Gen N/A Intel Xeon Scalable N/A Intel 13th Gen
Kit Configuration Single Channel Single Channel Single Channel Single Channel Single Channel
Memory Type DDR4 DDR3 DDR4 DDR4 DDR4
Operating Temperature N/A N/A N/A N/A N/A
Product Name MEM-2951-512U4GB MEM-2900-1GB= MEM-2900-512U2.5GB MEM-2900-512U1GB MEM-2951-512U1.5GB Memory Module
Product Type Computer Memory Computer Memory Computer Memory Computer Memory Computer Memory
Registered/Buffered Unbuffered Unbuffered Unbuffered Unbuffered Unbuffered
Reliability Rating Standard Standard Standard Standard Standard
RGB Lighting No No No No No
Speed 3200 MHz 1600 MHz 3200 MHz 2900 MHz 3200 MHz
Use Case Gaming / Workstation General Use Server Workstation Gaming / Workstation / Server
Voltage 1.35V 1.5V 1.35V 1.35V 1.35V
Weight 0.3 lbs 0.15 lbs 0.5 lbs N/A 0.3 lbs
Width 5.3 inches 5.3 inches 5.3 inches N/A 5.3 inches
XMP Support Intel XMP 2.0 No No No Intel XMP 2.0

My Cart (0)

Priority Shipping for Members

Sign in Sign up

Fast. Simple. Secure

3year Warranty

3 Year Extended Warranty

Right Arrow
Same Day Ship Img

Same-day Shipping

Right Arrow
Day Guarantee

14-Day Money Back Guarantee

Right Arrow
Subtotal: $0.00
Shipping: calculated at checkout
Taxes: calculated at checkout

Total:

$0.00

Check Details ⮟