Transcend TS256GUSD350V High Endurance 350V 256GB microSDXC - Class 10/UHS-I - U3 - 95 MB/s Read - 45 MB/s Write
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Product Features
Technical Overview
This microSDXC card delivers a maximum read speed of 95 MB/s and a write speed of 45 MB/s, supported by the Class 10/UHS-I (U3) speed class rating that guarantees minimum sustained write performance for high-resolution video recording. The 256GB capacity provides ample space for extended recording sessions without frequent file transfers or storage management interruptions.
The card's physical design emphasizes durability with a compact footprint measuring 0.59 inches in length, 0.43 inches in width, and just 1 millimeter in thickness. Weighing only 0.01 ounces, it maintains minimal impact on device portability while offering substantial storage capabilities for professional and consumer applications alike.
Relevant factors for this section include Storage Capacity, Maximum Read Speed, Maximum Write Speed, Width. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Key Product Advantages
Transcend's High Endurance 350V series prioritizes reliability in challenging environments where standard memory cards might fail. The engineering focuses on maintaining consistent performance under continuous write operations, particularly valuable for surveillance systems, dash cams, and sports cameras that operate for extended periods without interruption.
Environmental Resilience
The card is engineered to be waterproof, temperature proof, X-ray proof, and shock proof, providing protection against common environmental hazards that could compromise data integrity during field use or transportation.
- Waterproof construction
- Temperature resistant
- X-ray proof
- Shock proof design
Performance Consistency
With sustained write speeds meeting UHS-I U3 requirements, this card maintains reliable performance during continuous recording scenarios, preventing dropped frames or recording interruptions in critical applications.
- U3 speed class compliance
- 45 MB/s sustained write
- 95 MB/s peak read
- Full HD video support
Deployment / Use Cases
The Transcend High Endurance 350V 256GB microSDXC card is specifically designed for applications requiring reliable, high-capacity storage in compact form factors. Its performance characteristics make it ideal for devices that capture continuous video streams or handle large media files without compromising on speed or reliability.
Primary deployment scenarios include action cameras for outdoor sports documentation, dash cameras for vehicle surveillance, security systems for continuous monitoring, and drones for aerial photography and videography. The card's endurance characteristics also make it suitable for industrial applications where equipment operates in variable environmental conditions that could affect standard storage media.
Video Recording Applications
With 256GB capacity and U3 speed class rating, this card supports extended full HD video recording sessions without storage limitations or performance degradation, making it ideal for cameras that capture continuous footage.
- Full HD video recording
- Extended recording sessions
- No dropped frames
- Seamless file management
Mobile & Portable Devices
The compact microSDXC form factor and lightweight design make this card perfectly suited for smartphones, tablets, and portable gaming devices that benefit from expanded storage without adding significant bulk or weight to the device.
- Smartphone storage expansion
- Tablet media storage
- Portable gaming
- App data management
Physical Profile
Measuring just 15mm in length, 11mm in width, and 1mm in thickness, this microSDXC card maintains the standard form factor while incorporating enhanced durability features. The minimal weight of 0.40 grams ensures it doesn't impact the balance or portability of host devices, making it particularly valuable for lightweight applications like drones and wearable cameras where every gram matters.
The physical profile is practical for deployment planning because the dimensions and weight are clearly defined: 0.43" (11 mm), 0.01 oz (0.40 g). This helps confirm rack, shelf, desk, or cabinet fit before installation.
- Width
- 0.43" (11 mm)
- Weight
- 0.01 oz (0.40 g)
- Length
- 0.59" (15 mm)
Highlights
- 256GB storage capacity for extended recording and data storage
- 95 MB/s maximum read speed for fast file transfers and access
- 45 MB/s maximum write speed supporting UHS-I U3 performance class
- Class 10/UHS-I (U3) speed rating for reliable high-definition video recording
- Waterproof, temperature proof, X-ray proof, and shock proof construction
- Compact microSDXC form factor measuring 15mm × 11mm × 1mm
- Minimal weight of 0.40 grams for portable device compatibility
- High Endurance technology for continuous operation in demanding environments
- Suitable for action cameras, dash cams, security systems, and mobile devices
- Manufactured in Taiwan with Transcend's quality standards
Specifications
| Specifications | |
|---|---|
| Manufacturer | Transcend Information, Inc |
| Manufacturer Part Number | TS256GUSD350V |
| Brand Name | Transcend |
| Product Line | High Endurance |
| Product Model | 350V |
| Product Name | High Endurance 350V 256GB microSDXC Card |
| Product Type | microSDXC |
| Technical Information | |
| Storage Capacity | 256 GB |
| Maximum Read Speed | 95 MB/s |
| Maximum Write Speed | 45 MB/s |
| Speed Class Rating | Class 10/UHS-I (U3) |
| Physical Characteristics | |
| Width | 0.43" (11 mm) |
| Thickness | 39.37 mil (1 mm) |
| Length | 0.59" (15 mm) |
| Weight (Approximate) | 0.01 oz (0.40 g) |
| Miscellaneous | |
| Country of Origin | Taiwan |
FAQ
What is the actual storage capacity available on this 256GB microSDXC card?
The Transcend High Endurance 350V microSDXC card provides 256GB of raw storage capacity. Like all storage media, a small portion is used for file system overhead and manufacturer formatting, but you can expect approximately 238-240GB of usable space for your files, videos, and applications after formatting. This capacity is sufficient for approximately 32 hours of Full HD video recording at standard bitrates or tens of thousands of high-resolution photos.
How does the Class 10/UHS-I (U3) speed rating affect video recording performance?
The Class 10 designation guarantees minimum sustained write speeds of 10 MB/s, while the UHS-I U3 rating ensures minimum sustained write speeds of 30 MB/s. This combination means the card can reliably handle Full HD video recording at high bitrates without dropped frames or recording interruptions. The 45 MB/s maximum write speed exceeds these minimum requirements, providing headroom for more demanding recording scenarios or higher resolution formats.
What devices are compatible with this Transcend microSDXC card?
This microSDXC card is compatible with any device that supports the microSDXC format and UHS-I interface. Common compatible devices include action cameras, dash cameras, security cameras, drones, smartphones, tablets, portable gaming consoles, and other mobile devices with microSDXC slots. For optimal performance, ensure your device supports UHS-I technology to take full advantage of the card's speed capabilities.
What does 'High Endurance' mean for this memory card?
Transcend's High Endurance technology refers to specialized components and manufacturing processes that enhance the card's durability and lifespan under continuous write operations. These cards are engineered with higher-grade memory chips and controllers that withstand more write cycles than standard consumer cards, making them ideal for surveillance, dash cam, and action camera applications where data is constantly being written and overwritten.
How durable is this card against environmental factors?
The Transcend High Endurance 350V microSDXC card is engineered to be waterproof, temperature proof, X-ray proof, and shock proof. This means it can withstand exposure to water, extreme temperatures (both hot and cold), airport security X-ray scanners, and physical impacts without data loss or performance degradation. This durability makes it suitable for outdoor use, travel, and applications where the storage media might be exposed to challenging conditions.
What is the difference between maximum read speed and sustained write speed?
Maximum read speed (95 MB/s) refers to the peak performance when reading data from the card, which affects how quickly you can transfer files to another device or access stored content. Sustained write speed (guaranteed at 30 MB/s by U3 rating, with actual performance up to 45 MB/s) refers to the consistent performance when recording data to the card, which is critical for uninterrupted video recording. The card maintains its U3-rated write speed even during extended recording sessions, preventing dropped frames in video applications.
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