Introduction
The Transcend MTS400 is a high-performance M.2 Solid State Drive (SSD) designed for ultrabooks, tablets, and other compact devices. Featuring a SATA III 6Gb/s interface and a compact 42mm form factor, it offers enhanced speed and reliability for your computing needs. This manual provides essential information for the proper installation, operation, maintenance, and troubleshooting of your MTS400 SSD.

Image: Transcend MTS400 128GB M.2 SSD in its retail packaging, showing the product and its capacity.
Setup and Installation
Before installing your Transcend MTS400 M.2 SSD, ensure your device supports the M.2 2242 form factor and SATA III interface. Always back up your data before performing any hardware changes.
System Requirements
- Operating System: Windows XP/Vista/7/8 or Linux Kernel 2.6.31 or later.
- Compatible M.2 slot (Key B or B+M, 2242 form factor).
Physical Installation
- Power Off: Completely shut down your computer and disconnect all power sources.
- Access M.2 Slot: Open your computer case or laptop panel to access the M.2 slot. Refer to your computer's manual for specific instructions.
- Insert SSD: Gently insert the Transcend MTS400 SSD into the M.2 slot at a slight angle. Ensure the gold contacts are fully seated.
- Secure SSD: Press the SSD down and secure it with the screw provided by your system manufacturer.
- Reassemble: Close your computer case or laptop panel.

Image: A Transcend MTS400 M.2 SSD shown installed within the M.2 slot of a laptop motherboard, illustrating its compact size and integration.
Operating System Installation/Migration
After physical installation, you will need to install an operating system or migrate your existing one to the new SSD. For optimal performance, a clean installation of the operating system is often recommended. Alternatively, you can use disk cloning software to transfer your existing system to the MTS400 SSD. Transcend offers the SSD Scope software which includes a cloning utility.
Operating the SSD
The Transcend MTS400 SSD operates as a standard storage device once installed and configured. Its advanced features work in the background to ensure optimal performance and data integrity.
Key Features
- SATA III 6Gb/s Interface: Provides high-speed data transfer rates.
- MLC NAND Flash Memory: Ensures superior stability and endurance.
- DDR3 DRAM Cache: Stores a temporary copy of the most active data to shorten access times.
- Power Shield: Helps prevent data loss during sudden power outages.
- Dev Sleep Mode: Allows the device to completely shut down the SATA interface to conserve battery life in mobile devices.
- S.M.A.R.T. Support: Monitors the drive's health and reports potential issues.
- TRIM and NCQ Support: Optimizes performance and extends the lifespan of the SSD.
- Error Correcting Code (ECC): Detects and corrects transfer errors to prevent data corruption.
- Garbage Collection: Relocates existing data to release memory blocks, improving efficiency.
- Wear-leveling: Distributes data evenly across memory cells to prolong the SSD's lifespan.

Image: A close-up view of the Transcend MTS400 M.2 SSD, highlighting its various technical features such as ECC, Garbage Collection, Wear-leveling, DevSleep, and DDR3 DRAM cache.
Maintenance
Proper maintenance helps ensure the longevity and optimal performance of your Transcend MTS400 SSD.
- Enable TRIM: Ensure the TRIM command is enabled in your operating system. This command helps the SSD manage its memory blocks efficiently, preventing performance degradation over time. Most modern operating systems enable TRIM by default for SSDs.
- Use Transcend SSD Scope: Download and install Transcend's SSD Scope software from the official Transcend website. This utility allows you to monitor the SSD's health via S.M.A.R.T. technology, update firmware, and perform other maintenance tasks.
- Firmware Updates: Regularly check for and install firmware updates for your SSD using the Transcend SSD Scope software. Firmware updates can improve performance, stability, and compatibility.
- Avoid Full Capacity: While SSDs perform well even when nearly full, leaving some free space (e.g., 10-15%) can help maintain optimal performance and extend lifespan, as it provides more room for wear-leveling and garbage collection processes.
- Regular Backups: Although SSDs are reliable, no storage device is immune to failure. Regularly back up your important data to an external drive or cloud storage.
Troubleshooting
If you encounter issues with your Transcend MTS400 SSD, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| SSD not detected by system | Incorrect installation, BIOS/UEFI settings, driver issues, faulty SSD. |
|
| Slow performance | TRIM not enabled, nearly full drive, outdated firmware, system bottlenecks. |
|
| SSD becomes unresponsive/unreadable | Power fluctuation, controller issue, data corruption. |
|
Specifications
Detailed technical specifications for the Transcend MTS400 128GB M.2 SSD (TS128GMTS400).
- Model Number: TS128GMTS400
- Capacity: 128 GB
- Interface: SATA III 6Gb/s
- Form Factor: M.2 2242 (42mm)
- Flash Type: MLC NAND Flash memory
- DRAM Cache: DDR3 SDRAM
- Dimensions (LxWxH): 1.65 x 0.87 x 0.14 inches (42 x 22 x 3.58 mm)
- Weight: 0.32 ounces (9 g)
- Operating Temperature: 0°C (32°F) to 70°C (158°F)
- Operating Voltage: 3.3V ± 5%
- Features: TRIM, NCQ, S.M.A.R.T., DevSleep, Power Shield, ECC, Garbage Collection, Wear-leveling
- Compatible Devices: Laptop, PC, Linux systems
Warranty and Support
Transcend provides comprehensive support for its products. Please retain your proof of purchase for warranty claims.
Warranty Information
The Transcend MTS400 SSD comes with a limited warranty. The duration and terms of the warranty may vary by region and product. For detailed warranty information, please visit the official Transcend website or refer to the warranty card included with your product.
Technical Support
If you require technical assistance or have questions regarding your MTS400 SSD, please contact Transcend's customer support. You can typically find support contact information, FAQs, and driver/firmware downloads on the official Transcend website:
Website: www.transcend-info.com
Please have your product model number (TS128GMTS400) and serial number ready when contacting support.





