Featuring a SATA III 6Gb/s interface and a powerful controller, Transcend’s SSD420K/SSD420I is an ideal high-speed, lightweight, and shockproof replacement for traditional rotating hard drives. The SSD420I has a wide operating temperature, allowing sustained functionality and reliability in extreme temperatures.



  • Advanced Global Wear-Leveling and Block management for reliability
  • Advanced Garbage Collection
  • DDR3 DRAM Cache embedded
  • Built-in ECC (Error Correction Code) functionality
  • Power Shield embedded to prevent data loss in the event of sudden power outage
  • DEVSLP mode
  • Enhanced S.M.A.R.T. function
  • RoHS compliant
  • Shock resistance
  • Slim, elegant and lightweight design


Interface (connector) SATA III 6Gb/s
Form Factor 2.5"
Flash Type SSD420K / SSD420I: MLC
Capacity(GB) SSD420K: 32GB / 64GB / 128GB / 256GB / 512GB / 1TB
SSD420I: 32GB / 64GB / 128GB / 256GB / 512GB/ 1TB
Max. Performance (Vary by density) SSD420I: Read: 560MB/s; Write: 460MB/s
SSD420K: Read: 570MB/s; Write: 470MB/s
Op. Voltage(V) 5V±5%
Power Consumption (W) 3.46W (Active), 0.3W (Idle)
Op. Temp.(℃) SSD420K: 0℃~70℃
SSD420I: -40℃~85℃
Storage Temp.(℃) -40℃~85℃
Humidity(%) 0%~95%
Shock(G) 1500G, 0.5ms
Vibration(Hz/G) 5.0G (Peak-to-Peak), 5Hz to 800Hz (Frequency)
Dimensions(mm) SSD420K: 100mm × 69.85mm × 6.8mm (3.93" x 2.75" x 0.26")
SSD420I: 99.8mm × 69.8mm × 7.0mm (3.93" x 2.75" x 0.28")
Weight(g) SSD420K: Max 63g
SSD420I: Max 95g
MTBF(hours) 1,500,000 hours
Warranty Three-year Limited Warranty* (Excludes the situation when SSD Scope Pro**'s wear-out indicator shows 0% within 3 years)
*Please access here for more information about Transcend Warranty Policy.
** SSD Scope Pro software is by request. Please contact us for more information.

Due to the complexity and variety of industrial applications, Transcend cannot guarantee 100% compatibility with all platforms and under all scenarios.
For special applications and environments, it is strongly suggested to contact Transcend beforehand for clarification.

Order Information

  • TS16GSSD420K
  • TS32GSSD420I Iron case
  • TS32GSSD420K Aluminum case
  • TS64GSSD420I Iron case
  • TS64GSSD420K Aluminum case
  • TS128GSSD420I Iron case
  • TS128GSSD420K Aluminum case
  • TS256GSSD420I Iron case
  • TS256GSSD420K Aluminum case
  • TS512GSSD420I Iron case
  • TS512GSSD420K Aluminum case
  • TS1TSSD420I Iron case
  • TS1TSSD420K Aluminum case