Product Information

• Product Name: Transcend 2TB USB 3.1 External Hard Drive
• Model Series: StoreJet 25M3 or similar (exact model varies)
• Brand: Transcend Information, Inc.
• Series: StoreJet Portable Series
• Category: External Portable Hard Drive
• Release Period: 2018-2022 (various iterations)
• Form Factor: Portable external enclosure
• Dimensions: 120mm × 80mm × 15mm (approximate, varies by specific model)
• Weight: 200-250 grams (including internal drive)
• Color: Iron Grey (metallic aluminum finish)
• Material: Aluminum casing with plastic trim
• Country of Origin: Taiwan (Transcend headquarters) with manufacturing in China

Capacity & Interface

• Total Capacity: 2 Terabytes (2,000,000,000,000 bytes)
• Usable Capacity: Approximately 1.81 TB (after binary conversion and formatting)
• File System: Pre-formatted as exFAT (for cross-platform compatibility)
• Alternative Formats: Can be reformatted to NTFS, HFS+, APFS, ext4, etc.
• Interface: USB 3.1 Gen 1 (formerly USB 3.0)
• Connector Type: USB Type-A male (standard USB connector)
• Cable Included: USB 3.1 cable (Type-A to micro-B or Type-C depending on model)
• Backward Compatibility: USB 2.0, USB 1.1 (with reduced speed)
• Theoretical Speed: 5 Gbps (625 MB/s maximum theoretical)

Internal Drive Specifications

• Drive Type: 2.5-inch SATA Hard Disk Drive (HDD)
• Rotation Speed: 5400 RPM (typical for portable external drives)
• Cache Size: 128MB or 256MB (depending on specific drive model inside)
• Areal Density: Approximately 1-1.5 Tb/in² (depending on manufacturing date)
• Recording Technology: Perpendicular Magnetic Recording (PMR) or Shingled Magnetic Recording (SMR)
• Heads/Platters: Typically 2 platters, 4 heads for 2TB capacity
• Actuator Type: Voice coil actuator with embedded servo
• Internal Interface: SATA III 6Gb/s (connected via USB-SATA bridge)
• Possible Drive Manufacturers: Seagate, Toshiba, or Western Digital (varies by production batch)

Performance Specifications

• Sequential Read Speed: 110-130 MB/s (maximum, USB 3.1 interface)
• Sequential Write Speed: 100-120 MB/s (maximum, USB 3.1 interface)
• Random Read Speed: 0.8-1.5 MB/s (4KB random reads)
• Random Write Speed: 1.0-2.0 MB/s (4KB random writes)
• Access Time: 12-18 ms (typical for 5400 RPM drives)
• Latency: 5.5 ms average (rotational latency for 5400 RPM)
• Real-World Transfer Speeds:
  • Large files (video, ISO): 90-120 MB/s
  • Small files (documents, photos): 20-60 MB/s
  • Mixed file transfers: 40-80 MB/s
• USB 2.0 Performance: 30-40 MB/s maximum (when connected to USB 2.0 port)

Enclosure & Connectivity

• Enclosure Material: Aluminum casing with shock-absorbing design
• Cooling: Passive cooling (no fan, vents for heat dissipation)
• LED Indicator: Activity LED (typically blue for USB 3.1, may blink during access)
• Connection Port: Micro-B USB 3.1 or USB Type-C (depends on specific model)
• Cable Length: 45-50cm USB cable included
• Additional Features:
  • One-touch backup button (on some models)
  • Shock-resistant design with internal suspension
  • 3-stage shock protection system (on StoreJet models)

Power Requirements

• Power Source: Bus-powered via USB port
• Voltage: 5V DC ±5%
• Current: 900mA maximum (during spin-up)
• Typical Power: 1.8-2.5W during operation
• Idle Power: 0.8-1.2W
• Sleep Mode: 0.2-0.5W
• Power Management: Automatic power saving modes
• Y-Cable: Not included (not needed for most modern computers)

Environmental Specifications

• Operating Temperature: 5°C to 50°C (41°F to 122°F)
• Storage Temperature: -20°C to 60°C (-4°F to 140°F)
• Operating Humidity: 10% to 90% RH (non-condensing)
• Storage Humidity: 5% to 95% RH (non-condensing)
• Operating Altitude: Up to 10,000 feet (3,048 meters)
• Shock Resistance:
  • Operating: 400G, 2ms (with shock protection features)
  • Non-operating: 1000G, 1ms
• Vibration Resistance:
  • Operating: 5-500Hz, 5G
  • Non-operating: 5-500Hz, 10G

Compatibility

• Operating Systems:
  • Windows 7/8/10/11 (plug and play)
  • macOS 10.6+ (plug and play with exFAT)
  • Linux (kernel 2.6+ with USB storage support)
  • Chrome OS
• Gaming Consoles:
  • PlayStation 4/PS4 Pro (requires formatting)
  • PlayStation 5 (for PS4 games, media storage)
  • Xbox One/Xbox Series X|S (requires formatting)
• Other Devices:
  • Smart TVs with USB ports
  • Media players and set-top boxes
  • Car audio systems with USB
  • Surveillance DVR systems

Software & Features

• Included Software (if any):
  • Transcend Elite (backup/security software for Windows/macOS)
  • Auto-backup utility
  • Data encryption software (256-bit AES on some models)
• Backup Features:
  • One-touch backup button (on select models)
  • Scheduled backup options
  • Real-time sync capabilities
• Security Features:
  • Password protection (software-based)
  • Hardware encryption (on premium models)
  • Secure erase functionality

Warranty & Support

• Warranty Period: 2 years limited warranty
• Warranty Coverage: Defects in materials and workmanship
• Support Type: Return to retailer/RMA service
• Technical Support: Online resources, email support
• Regional Support: Global warranty with local service centers

Package Contents

• Transcend 2TB USB 3.1 External Hard Drive (Iron Grey)
• USB 3.1 cable (Type-A to Micro-B or Type-C)
• Quick start guide
• Warranty information
• Software download instructions (if applicable)

Performance Comparison

• Compared to Internal HDD: Similar speed when connected via USB 3.1
• Compared to External SSD: 3-5x slower sequential speeds, much slower random access
• Compared to Cloud Storage: Faster local access, no internet required, one-time cost
• Speed Limitations: Primarily limited by HDD mechanics, not USB interface

Use Case Recommendations

• Ideal For:
  • Media storage (photos, videos, music collections)
  • Backup and archival storage
  • Game storage for consoles
  • File transfers between computers
  • Time Machine backups for Mac
  • Portable document and project storage
• Less Suitable For:
  • Running applications or operating systems
  • Video editing projects (slow for large file handling)
  • Frequent small file transfers (slow random access)
  • Environments with excessive vibration or movement

Brand Information

• Company: Transcend Information, Inc.
• Founded: 1988
• Headquarters: Taipei, Taiwan
• Specialization: Storage products, memory modules, multimedia products
• Market Position: Mid-range storage solutions with good value

Important Notes

• SMR Consideration: May use SMR technology which can slow down during sustained writes
• Formatting: May need reformatting for specific uses (game consoles, specific OS requirements)
• Safely Remove: Always use "Safely Remove Hardware" before disconnecting
• Backup Strategy: External drives can fail; maintain multiple backups of important data
• Travel Considerations: Portable but sensitive to shocks; use protective case during transport