Silicon Motion Reveals Single-Chip Controller for High-Density Portable SSDs


May 30, 2024 by our News Team

Silicon Motion introduces the SM2322, a single-chip solution for external portable SSDs with a storage capacity of up to 8 TB, data transfer rates of 20 Gbps, and advanced features for data integrity and security, catering to the needs of the AI era.

  • Industry's fastest and highest-performing single-chip solution for external portable SSDs
  • Massive storage capacity of up to 8 TB and data transfer rates of 20 Gbps
  • Compatible with multiple operating systems and supports ProRes format and MFi specification for iPhone users


Silicon Motion Technology Corporation, a leading global company specializing in NAND flash controllers for solid-state storage devices, has just launched its latest innovation, the SM2322. This single-chip solution is being hailed as the industry’s fastest, high-performance, low-power, and cost-effective solution for external portable SSDs. With a staggering storage capacity of up to 8 TB and data transfer rates of 20 Gbps, the SM2322 is poised to revolutionize the way we store and access large amounts of content seamlessly.

As the demand for AI-capable devices continues to rise, the need for high-density and high-performance storage solutions becomes increasingly critical. The SM2322-powered portable SSDs offer a unique combination of affordability, density, and performance, making them the ideal choice for a wide range of applications. Equipped with a USB 3.2 Gen 2×2 interface boasting a bandwidth of 20 Gb/s, this innovative solution delivers exceptional sequential read and write transfer speeds of 2,100 MB/s and 2,000 MB/s respectively.

One of the standout features of the SM2322 is its compatibility with various operating systems, including Windows, Android OS, and macOS. Additionally, it supports the ProRes format and MFi specification for iPhone users, making it an incredibly versatile storage solution for AI smartphones, HD content creators, and gaming enthusiasts. By eliminating the need for a USB bridge chip, Silicon Motion’s single-chip design not only reduces costs but also minimizes power consumption.

To ensure data integrity and security, the SM2322 incorporates advanced technologies such as NANDXtend 4 KB LDPC error-correction and SRAM ECC. It also provides AES 256-bit encryption, fingerprint security, and full compliance with the Trusted Computing Group (TCG) Opal specification. These features guarantee the highest level of data protection and meet stringent security standards.

Nelson Duann, Senior VP of Client & Automotive Storage Business at Silicon Motion, emphasized the increasing demand for managing large amounts of digital content, particularly with the proliferation of AI smartphones and handheld gaming devices. He stated, “The new SM2322 now sets the bar even higher, introducing enhancements to support the higher speed USB3.2 specifications and providing greater capacity, catering to the needs of the AI era for large-scale digital media content storage and access.”

Silicon Motion’s SM2322 controller has already powered numerous portable SSDs from well-known brands such as Adata, Crucial, HP, Kingston, Lexar, Transcend, Xiaomi, and Seagate LaCie. Building on the success of its predecessors, the SM2322 promises exceptional performance and reliability, making it a top choice for those seeking portable storage solutions.

The SM2322 is currently in the sampling phase with multiple customers and is expected to enter mass production in mid-2024. With its impressive capabilities and advanced features, this next-generation portable SSD controller is set to redefine the industry standard and meet the growing demands of the AI era.

Silicon Motion Reveals Single-Chip Controller for High-Density Portable SSDs

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Background Information


About Adata:

Adata is a well-established Taiwanese brand that specializes in memory and storage solutions, including RAM modules, solid-state drives (SSDs), and USB flash drives. They are recognized for their reliable and high-performance storage products, catering to both consumer and industrial needs.

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About HP:

Founded by Bill Hewlett and Dave Packard in a garage in 1939, HP (Hewlett-Packard) is a global technology giant known for its pioneering innovations in computing and printing technology. With a legacy of over eight decades, HP has consistently delivered a wide range of high-quality products and services, including personal computers, printers, servers, and software solutions.

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About Kingston:

Kingston Technology, founded in 1987, is a respected American company specializing in memory and storage solutions. They offer a diverse range of products, including memory modules, solid-state drives, USB drives, and more. Kingston is known for its reliable and high-performance storage solutions.

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About Lexar:

Lexar is an American brand of flash memory products, including memory cards, USB flash drives, CompactFlash cards, card readers, and Solid-State drives. Founded in 1996, Lexar has been a pioneer in creating innovative storage solutions. The brand was acquired by Micron Technology in 2006 and later merged with Crucial Technology. Lexar products are designed to enhance performance, quality, compatibility, and reliability for digital devices.

Lexar website  Lexar LinkedIn
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About Seagate:

Seagate Technology, founded in 1978, is a leading data storage solutions provider that specializes in hard drives and storage solutions for consumers, businesses, and data centers. With a reputation for reliability and innovation, Seagate's products address diverse storage needs, from individual data storage to large-scale enterprise environments. The company has played a crucial role in shaping the data storage landscape and continues to be at the forefront of technological advancements.

Seagate website  Seagate LinkedIn
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Technology Explained


AES 256: AES 256, short for Advanced Encryption Standard with a key length of 256 bits, is a widely used symmetric encryption algorithm. It employs a substitution-permutation network to ensure data confidentiality and security. AES comes in different key lengths, including AES-128 and AES-192, where the numbers represent the key size in bits. AES-128 uses a 128-bit key, while AES-192 uses a 192-bit key. These standards are considered secure and are used for various applications to protect sensitive information during data transmission and storage.

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NAND: NAND technology is a type of non-volatile memory that is used in many computer applications. It is a type of flash memory that is used to store data in a non-volatile manner, meaning that the data is not lost when the power is turned off. NAND technology is used in many computer applications, such as solid-state drives, USB flash drives, digital cameras, and memory cards. It is also used in many embedded systems, such as cell phones, tablets, and other consumer electronics. NAND technology is a reliable and cost-effective way to store data, making it a popular choice for many computer applications.

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SSD: A Solid State Drive (SSD) is a modern data storage device that employs flash memory technology to store data electronically. Unlike traditional hard disk drives (HDDs), SSDs have no moving parts, resulting in significantly faster read and write speeds. This leads to quicker boot times, faster application loading, and smoother overall system performance. SSDs are known for their durability, shock resistance, and energy efficiency, making them ideal for laptops, ultrabooks, and other portable devices. They come in various form factors, including 2.5-inch, M.2, and PCIe cards, and are favored for their reliability, quiet operation, and reduced heat generation

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