Transcend SSD420K 128GB 2.5" SATA III SSD

Upgrade your computer’s speed and reliability with the Transcend SSD420K 128 GB Solid State Drive. Built around a robust MLC NAND and the latest SATA III (6Gb/s) interface, this 2.5" internal SSD delivers dramatically faster boot times, snappier application launches, and quicker data transfers compared with traditional hard drives. Its compact 2.5" form factor makes it an easy drop-in replacement for laptops, ultrabooks, and desktops, transforming aging systems into modern performers without a hefty price tag. The SSD420K is engineered for everyday computing, heavy multitasking, multimedia editing, and gaming, offering a balance of speed, durability, and energy efficiency that keeps your workstation productive and quiet. With the Intelligent Power Shield (IPS) feature, Transcend protects your data during unexpected power loss, helping to prevent corruption and loss of information when power dips or is abruptly interrupted. In short, the SSD420K is a smart, value-packed upgrade that unlocks faster performance while reducing heat and noise in your setup.

• Ultra-fast SATA III 6Gb/s performance delivering sequential read speeds up to 525 MB/s and sequential write speeds up to 450 MB/s, enabling rapid boot times, quick program loads, and smooth large-file transfers for everyday tasks and demanding workloads alike.
• MLC NAND flash (SSD420K/SSD420I) balances performance and endurance to provide reliable data integrity across multiprogramming environments, from OS operations to multimedia editing and gaming sessions.
• Intelligent Power Shield (IPS) adds protection against power loss by safeguarding data in flight, reducing the risk of file corruption during unexpected shutdowns—an essential feature for laptops and mobile workstations.
• Lightweight, shockproof 2.5" design with no moving parts, delivering silent operation and improved durability in portable devices, desktops, and small form factor builds while improving overall system responsiveness.
• Energy-efficient operation with low heat output and a compact footprint, making the SSD420K an ideal plug-and-play upgrade for notebooks and slim desktops that crave performance without compromising battery life or thermal headroom.

Technical Details of Transcend SSD420K

• Model: SSD420K
• Capacity: 128 GB
• Form Factor: 2.5-inch SATA SSD (standard 9.5 mm height for typical bays)
• Interface: SATA III 6Gb/s (SATA/600)
• NAND Type: MLC (Multi-Level Cell) flash
• Controller: High-performance internal controller optimized for speed and efficiency
• Sequential Read: Up to approximately 525 MB/s
• Sequential Write: Up to approximately 450 MB/s
• Random Read IOPS: High IOPS for responsive multitasking (typical values in line with consumer-grade SSDs)
• Random Write IOPS: High IOPS suitable for OS operations, software installs, and gaming loadouts
• Error Correction / Wear Leveling: ECC and wear-leveling technologies to extend drive lifespan
• Power Features: Intelligent Power Shield (IPS) for data protection during power loss
• Operating Environment: Solid-state architecture with no moving parts for durability and silent operation
• Durability: Shock-resistant design suitable for laptops and mobile deployments
• Warranty: Typically backed by a multi-year warranty (subject to region and retailer terms)
• Dimensions: ~100.2 mm x 69.9 mm x 9.5 mm (standard 2.5" drive footprint)
• Weight: Lightweight module designed for portable use
• Compatibility: Plug-and-play with systems supporting SATA 3Gb/s/6Gb/s and AHCI mode

How to install Transcend SSD420K

• Power down your computer or laptop and unplug any power sources. If you’re upgrading a laptop, remove the battery if possible and discharge static electricity by touching a grounded metal surface.
• Open the drive bay or access panel to expose the 2.5" SATA interface. If replacing an existing drive, remove the old drive carefully and note the screw locations.
• Insert the SSD420K into the 2.5" drive bay, align the connector with the motherboard or backplane, and secure it with screws. Connect the SATA data cable and the power connector to the SSD.
• Power on the system. If you are cloning from an existing drive, use your preferred disk-cloning software to mirror your old drive onto the new SSD prior to swapping.
• In Windows, open Disk Management to initialize and format the new drive with a suitable file system (NTFS for Windows, EXFAT for cross-platform usage). In macOS, use Disk Utility to format the drive as APFS or Mac OS Extended, depending on your needs.
• Ensure AHCI mode is enabled in the BIOS/UEFI for optimal SATA performance. After formatting, set the SSD as the primary boot drive if you installed it as your OS drive.
• Optionally enable TRIM support and, if applicable, enable optimizations in your operating system to maintain long-term performance and endurance.
• Repeat the steps as necessary for additional drives or larger storage configurations. Always back up important data before performing hardware changes.

Frequently asked questions

What capacity options are available for the SSD420K?

The model described here is a 128 GB capacity option, offering a balance of cost and performance for system acceleration, OS boot, and everyday productivity workloads. Higher-capacity variants may exist in the product line depending on region and retailer.

Is the SSD420K compatible with both laptops and desktops?

Yes. The 2.5" SATA form factor and SATA III interface are compatible with most laptops, ultrabooks, and desktops that have a standard 2.5" drive bay and SATA power/data connections. For laptops, ensure there is a spare 2.5" bay and a secure mounting point.

Does the SSD420K support TRIM and SMART data monitoring?

Yes. The drive supports TRIM to maintain performance over time and employs SMART attributes to monitor health and predict potential failures, enabling proactive maintenance and drive replacement planning.

What improvements should I expect after upgrading to the SSD420K?

Expect noticeably faster boot times, faster application launches, quicker file transfers, and improved system responsiveness during multitasking. The drive’s silent operation and reduced heat output can also contribute to a more comfortable and quiet computing environment.

What is the warranty period for the SSD420K?

Warranty terms vary by region and retailer, but Transcend solid-state drives typically come with a multi-year limited warranty. Check the specific warranty information provided by the seller at the time of purchase for exact coverage.

Can I use the SSD420K as a system disk and for data storage at the same time?

Absolutely. The SSD can serve as the primary OS drive for the system, with additional storage or games installed on another drive if desired. You can configure partitions to organize data efficiently and take full advantage of the speed benefits for system-related tasks.

The Transcend SSD420K 128 GB is designed to deliver a compelling mix of speed, durability, and efficiency for users looking to breathe new life into older machines or outfit new builds with a fast, reliable storage solution. Its MLC flash and SATA III interface provide balanced performance suitable for everyday computing, demanding multitasking, and light content creation, while IPS and a robust, shock-resistant build offer peace of mind in portable setups. Whether you’re upgrading a laptop for better battery life and on-the-go productivity or refreshing a desktop with snappier performance, the SSD420K is a strong choice that combines tangible speed gains with dependable endurance. Maintain your data’s integrity and enjoy a smoother computing experience with a drive that’s designed for speed, efficiency, and resilience in real-world usage.