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MEM-2900-512U1GB
UPG 1GB KIT 2X512MB FROM 512MB DRAM FOR CISCO 2901-2921
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MEM-2900-512U1GB is a high-performance DDR4 UDIMM engineered for advanced workstation and server builds. Built to operate at 2900 MHz with a tight CL16 timing and 1.35V power requirement, this unbuffered memory module delivers reliable performance without ECC support while featuring an integrated heatspreader for optimal thermal management.
Designed as a single-channel kit, MEM-2900-512U1GB combines cutting-edge memory technology with robust construction to support desktop and server platforms. Although it does not offer RGB lighting or XMP enhancements, its proven DDR4 design and compatibility make it an ideal choice for professionals seeking consistent performance in mission-critical applications.
MEM-2900-512U1GB price is $196.00, a 67.3% saving from the Cisco list price of $600.00. MEM-2900-512U1GB is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-2900-512U1GB for additional pricing. Browse the full 2900 Router Memory & Flash series or explore all Cisco products.
In a multi-site enterprise, network admins install the MEM-2900-512U1GB-UPG to double the Cisco 2901/2921’s DRAM from 512 MB to 1 GB. This upgrade delivers up to 45% faster throughput under heavy web and file-transfer loads, ensuring consistent application performance and reduced packet loss across branch offices.
A managed service provider deploys the 1 GB DRAM kit on Cisco 2901 routers to support hundreds of IPsec VPN tunnels at remote sites. The extra memory enables up to 2× higher encryption session capacity, reducing CPU contention and delivering stable, low-latency connections for secure telework and B2B traffic.
An educational institution upgrades its campus routers with MEM-2900-512U1GB-UPG to handle concurrent VoIP calls and HD video streams. The expanded DRAM buffer minimizes jitter and call drops, guaranteeing clear audio/video quality and uninterrupted distance learning sessions during peak hours.
Mon–Fri: [09:00-16:00]
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| MEM-2900-512U1GB |  MEM-2951-512U1GB |  MEM-2951-512U4GB |  MEM-2900-1GB |  MEM-2900-512MB | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR3 | DDR4 |
| Capacity | 512 GB | 512 GB | 4 GB | 1 GB | 512 MB |
| Compatible Platforms | Desktop / Server | Desktop / Laptop / Server | Desktop / Laptop / Server | Desktop | Desktop / Server |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Single Channel | Single Channel | Single Channel | Single Channel |
| Speed | 2900 MHz | 3200 MHz | 3200 MHz | 1600 MHz | 2933 MHz |
| Reliability Rating | Standard | Standard | Standard | Standard | Standard |
| CAS Latency (CL) | CL16 | CL16 | CL16 | CL11 | CL16 |
| Voltage | 1.35V | 1.35V | 1.35V | 1.5V | 1.2V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | No | No | Intel XMP 2.0 | No | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | Yes |
| Use Case | Workstation | Server | Gaming / Workstation | General Use | Workstation |
| Product Name | MEM-2900-512U1GB | MEM-2951-512U1GB | MEM-2951-512U4GB | MEM-2900-1GB | MEM-2900-512MB |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Practical upgrade for modest performance needs.
Cisco memory ensured reliability.
Installation was straightforward.
Stable and dependable results.
Good value memory kit.
The MEM-2900-512U1GB is a Cisco-certified memory upgrade kit containing two 512 MB DRAM modules to expand compatible routers from 512 MB to 1 GB of RAM.
This upgrade kit is compatible with Cisco 2901, 2911, and 2921 Integrated Services Routers.
Increasing to 1 GB of DRAM enables larger routing tables, accelerated VPN and QoS processing, and support for advanced security features.
Yes. Installation requires only following the included Cisco hardware guide—no soldering or specialized training is needed.
Only a standard Phillips screwdriver is required to open the chassis and secure the new memory modules.
No. Cisco’s customer-installable-part policy covers DRAM upgrades, so your original equipment warranty remains intact.
Check the router’s model number on its chassis (2901/2911/2921) and ensure it currently has a single 512 MB DRAM module installed.
The kit includes a 90-day replacement warranty and lifetime technical support via authorized Cisco partners.
Yes. The MEM-2900-512U1GB kit contains genuine Cisco-certified DRAM modules for full compatibility and reliability.
Yes. Unopened kits may be returned within 30 days for a full refund under our standard return policy.
Performance gains—such as faster VPN throughput and smoother multitasking—are immediate after rebooting the router.
Yes. An illustrated, step-by-step installation guide is included to ensure safe and accurate module replacement.
No. For system stability, both slots must be populated with the matching 512 MB modules provided in the kit.
Yes. Upgrading to 1 GB of DRAM unlocks advanced IOS features such as Zone-Based Firewall, IPS, and enhanced MPLS.
Power down and unplug the router, remove the chassis cover, replace the old module with each new 512 MB DRAM in the slots, reinstall the cover, then power on.
This kit specifically provides two 512 MB modules for Cisco 2901–2921 routers, while other kits offer different capacities and model compatibility.
United States
