This article covers Transcend TS2TMTS425S 2TB M.2 SATAIII 2242 B+M キー 内蔵ソリッドステートドライブ.

Overview

The Transcend TS2TMTS425S is an internal SSD designed for the M.2 2242 form factor, offering a massive 2TB capacity. It uses a SATA III interface with a B+M key connector, ensuring broad compatibility across various devices. The standout feature is packing 2TB of storage into a compact 42mm length, ideal for thin laptops, tablets, and industrial systems where space is limited. Built-in SLC caching technology enhances random access performance and contributes to long-term reliability.

Compatibility Guide

This SSD fits M.2 2242 slots only; it requires a SATA-capable M.2 interface (not NVMe-only). The B+M key design allows installation in both B-key and M-key sockets. Since it uses SATA III (6Gbps), transfer speeds are capped at around 550 MB/s, so it won't match NVMe performance. Before purchase, verify that your device's M.2 slot supports SATA signaling and has the physical 42mm length. It is not compatible with longer slots (e.g., 2280) without an adapter.

Product Info

Released around 2021, the TS2TMTS425S remains available through major retailers like . Pricing for the 2TB model is approximately ¥38,000, subject to fluctuation. Transcend offers a standard 3-year warranty. Market positioning is entry-to-mid-range, offering the highest capacity in the niche M.2 2242 segment. While not as fast as NVMe, it provides ample performance for SATA-linked systems. TLC NAND with SLC caching balances cost and daily use efficiency.

Best Use Cases

Upgrading thin laptops or tablets: Devices with a M.2 2242 slot often lack high-capacity options. This 2TB drive is perfect for storing large media libraries, archives, or running multiple applications. Industrial or embedded systems: The combination of SLC cache, RAID engine, and LDPC error correction ensures data integrity and stable long-term operation in demanding environments. * Budget file server or secondary machine: If high sequential speeds aren't critical, this SATA SSD offers generous capacity at a lower cost than NVMe equivalents, making it suitable for backups or media storage.

Things to Consider

The primary limitation is speed: SATA III maxes out at 600 MB/s, far slower than even entry-level NVMe drives. This makes it unsuitable for tasks requiring fast loading, such as gaming or 4K video editing. Additionally, many modern laptops and desktops use NVMe-only M.2 slots; double-check your device's specifications. The price per gigabyte is higher than that of 2.5-inch SATA SSDs, so consider whether the compact form factor justifies the premium. Finally, the 2TB capacity may be overkill for basic storage; assess your actual needs before purchasing.

Product Disclosure (Amazon)

  • Manufacturer: トランセンドジャパン
  • ASIN: B092W8G8C6
  • Note: This article covers a manufacturer-made product based on Amazon listing details.