SD Card (Secure Digital Card)

An SD card is a type of removable flash memory card used for storing data in portable devices such as digital cameras, smartphones, tablets, and laptops. SD cards offer a compact, versatile, and affordable storage solution that allows users to easily expand their device's storage capacity and transfer data between devices.

Key features of SD cards include:

1. Portability: SD cards are small and lightweight, making them easy to carry and swap between devices.
2. Compatibility: SD cards are widely compatible with many devices, including cameras, smartphones, laptops, and gaming consoles.
3. Storage Capacity: SD cards come in various storage capacities, ranging from a few gigabytes (GB) to several terabytes (TB), allowing users to choose the right size for their needs.
4. Read/Write Speeds: SD cards are categorised by their speed class, which indicates the minimum write speed for the card. Higher speed classes are better suited for demanding applications like 4K video recording.

Types of SD cards:

• SD: The original type. These are mostly less common now.
• SDHC (High Capacity): Holds more data (up to 32GB).
• SDXC (Extended Capacity): For HUGE storage needs (up to 2TB!).
• Micro SD: Miniature versions, often used in phones and tablets along with adapters.

SD Card Speeds

You'll often see speed classes on SD cards (e.g., Class 10, UHS-I, UHS-II). These classes tell you how fast the card can write data, which is important for:

• Burst Photography: Taking lots of photos in quick succession.
• Video Recording: Especially at high resolutions like 4K.

Why SD Cards Matter

• Expanding Storage: Perfect for adding more space to your devices for photos, videos, music, and more.
• Transferring Files: Easily move files between cameras, computers, etc.
• Backups: Can be used to back up important data in a pinch.

SD Cards & Refurbished Devices:

• Check Compatibility: Make sure the device supports the SD card type (SD, SDHC, SDXC) and size you're interested in.

• Usage: Choose an SD card speed based on your needs - if you primarily store photos, a cheaper card might be fine.

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