Samsung M386AAK40B40-CUC 128GB Memory
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M386AAK40B40-CUC Samsung 128GB 2400mhz PC4-19200 DDR4 SDRAM New

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Part Number#: M386AAK40B40-CUC
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Short Description:
M386AAK40B40-CUC 128GB 1X128GB 2400mhz PC4-19200 Cl19 Ecc Registered Octa Rank X4 1.2V DDR4 SDRAM 288-Pin Lrdimm Memory Module for Server | Made by Samsung | Brand New 3 Years Warranty
Product Condition:
New Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

Product Overview

The M386AAK40B40-CUC is a type of memory module made by Samsung. It is designed for use in servers and is known for its high capacity and high speed. In this article, we will explain in detail the features and specifications of this memory module, including its size, speed, voltage, and other important details that make it a suitable option for servers.

Size and Capacity

The M386AAK40B40-CUC has a size of 288-pins and is classified as a LRDIMM (Load-Reduced DIMM). It has a capacity of 128GB, which means it can store a large amount of data. This makes it a great choice for servers that need to store and process large amounts of data.

Speed and Timing

The memory module has a speed of 2400MHz, which means it can transfer data at a high rate. This makes it ideal for applications that require fast data processing, such as servers that run multiple applications simultaneously. The timing of the module is measured in CL (CAS Latency) and it has a CL rating of 19. The lower the CL rating, the faster the memory module can access data.

ECC Registered and Octa Rank

The M386AAK40B40-CUC is an ECC (Error-Correcting Code) Registered memory module. ECC memory modules are designed to detect and correct errors that can occur during data transfer. This is important for servers because errors in data can lead to system crashes or other issues that can affect the performance of the server.

The memory module is also Octa Rank, which means it has eight ranks. A rank is a set of memory chips that can be accessed simultaneously. Having more ranks allows the memory module to transfer data faster and more efficiently.

X4 Technology

The M386AAK40B40-CUC uses X4 technology, which means it has four bits per memory cell. This is different from traditional memory modules that use X8 or X16 technology. X4 technology allows for higher density memory modules, which means more data can be stored in a smaller space.


The memory module has a voltage of 1.2V, which is lower than the voltage used by older memory modules. Lower voltage means less power consumption, which can result in lower energy costs for servers. It also generates less heat, which can reduce the need for cooling systems in the server.

In Summary, the M386AAK40B40-CUC is a high-performance memory module designed for use in servers. It has a large capacity, high speed, and low voltage, making it an ideal choice for servers that require fast data processing, low power consumption, and reliable performance. The ECC Registered and Octa Rank features ensure that the memory module can detect and correct errors during data transfer, which is important for maintaining server performance and avoiding system crashes. The X4 technology and 288-pin LRDIMM design also make this memory module a space-efficient option for servers.

General Information about the Samsung M386AAK40B40-CUC

  • Manufacturer: Samsung
  • Part Number or SKU# M386AAK40B40-CUC
  • Type: Memory (RAM)
  • RAM Type: PC4-19200
  • Product Name: 128GB DDR4 SDRAM Memory Module

Technical Information

  • Storage Capacity: 128
  • Memory Technology: DDR4 SDRAM
  • Number Of Modules: 1 X 128GB
  • Bus Speed: 2400MHz DDR4-19200/PC4-19200
  • Data Integrity Check: Ecc
  • Signal Processing: Registered
  • Cas Latency Timings: Cl19
  • Rank Features: 8rx4
  • Form Factor: 288-Pin Lrdimm

Dimensions & Weight

  • Height: 0.75 Inch
  • Width: 3.5 Inch
  • Depth: 7.8 Inch
  • Weight: 1 LBS

Contact us or ask for live chat/help if you have any questions about the compatibility of this item to ensure the model's matching features with your current system.

Product Condition:
New Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

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Individual product warranty mentioned on each item product description page/detail page.

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Shipping Options and Estimated Delivery Time

UPS Shipping Options:

FREE UPS® Ground (Free shipping to all orders for 48 states!)
Estimated delivery time: 4-7 business days

UPS 3 Day Select®
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UPS 2nd Day Air®
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UPS® First Overnight - Saturday
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FedEx Shipping Options:

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FedEx Express Saver®
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Available throughout all 50 states (except Hawaii and Alaska)

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Available throughout all 50 states

FedEx Standard Overnight®
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Available throughout all 50 states (Hawaii is outbound only)

FedEx Priority Overnight®
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Available throughout all 50 states

FedEx First Overnight®
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Worldwide Shipping Options:

UPS®/FedEx® International Economy

Estimated delivery time: 4-7 business days

UPS®/FedEx® International Priority

Estimated delivery time: 2-4 business days

UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

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