Lot of 10 Used MicroSD card (Mixed Brand)

microSD Card Specifications

This document details the typical specifications for our microSD memory cards, designed for expanding storage in a wide range of portable devices.

Overview: microSD cards are incredibly versatile, miniature storage solutions essential for smartphones, tablets, drones, action cameras, gaming consoles (like the Nintendo Switch), and more. They provide a convenient way to add significant storage capacity for high-resolution photos, 4K videos, large apps, and extensive media libraries, enhancing your device's capabilities without compromising portability.

Key Features & Specifications

• Form Factor: microSD (Dimensions: 15mm x 11mm x 1.0mm)

  • Includes SD Adapter: Most microSD cards come with an adapter, allowing them to be used in standard SD card slots (e.g., in DSLRs, laptops).

• Capacities Available: Ranging from 32GB to 1TB (Terabyte), catering to diverse storage needs from casual use to professional-grade recording.

• Speed Class Ratings (Crucial for Performance):

  • UHS Speed Class (U):

    • U1 (UHS Speed Class 1): Guarantees a minimum sequential write speed of 10 MB/s. Ideal for Full HD (1080p) video recording and continuous still image shooting.

    • U3 (UHS Speed Class 3): Guarantees a minimum sequential write speed of 30 MB/s. Recommended for 4K Ultra HD (UHD) video recording, high-speed continuous burst shooting, and VR content.

  • Video Speed Class (V): (Essential for smooth video capture)

    • V10: Minimum sequential write speed of 10 MB/s.

    • V30: Minimum sequential write speed of 30 MB/s. (Our most common recommendation for consistent 4K video recording)

    • V60: Minimum sequential write speed of 60 MB/s. (For higher bitrate 4K or 8K recording)

    • V90: Minimum sequential write speed of 90 MB/s. (For professional cinematic 4K/8K recording)

  • Application Performance Class (A): (Optimized for running apps directly from the card)

    • A1: Offers better random read/write performance (1500 IOPS Read, 500 IOPS Write) for faster app loading and smoother mobile experience.

    • A2: Delivers even faster random read/write speeds (4000 IOPS Read, 2000 IOPS Write) for superior app performance on compatible devices.

  • Max Read Speed: Varies by model and capacity, typically ranging from 90 MB/s to 200 MB/s+. Enables quick file transfers to your computer.

  • Max Write Speed: Varies by model and capacity, typically ranging from 30 MB/s to 150 MB/s+. Dictates how fast data can be saved to the card.

• Bus Interface:

  • UHS-I (Ultra High Speed - Phase I): Standard for most high-performance microSD cards, with a theoretical maximum bus speed of 104 MB/s.

  • UHS-II (Ultra High Speed - Phase II): Features an additional row of pins for significantly faster data transfer (up to 312 MB/s theoretical max). Found on premium, professional-grade cards.

• Durability:

  • Engineered to withstand harsh conditions, commonly featuring waterproof, temperature-proof, X-ray proof, and magnet-proof designs, ensuring your data remains secure in challenging environments.

• Compatibility:

  • Fully compatible with devices supporting SDHC (Secure Digital High Capacity) or SDXC (Secure Digital eXtended Capacity) standards. All microSD cards over 32GB are SDXC. Please verify your device's compatibility.

Ideal Usage Scenarios:

• Smartphones & Tablets: Expand storage for apps, photos, videos, and music.

• Action Cameras (GoPro, DJI Osmo Action): Capture high-bitrate 4K footage without dropped frames.

• Drones: Store hours of aerial footage in stunning resolution.

• Gaming Consoles (Nintendo Switch): Significantly increase game storage.

• Dash Cams & Security Cameras: Reliable continuous recording.