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SD cards, short for secure digital cards, are removable, compact memory cards used for data storage in portable devices such as digital cameras. Some PCs and laptops come with an SD card slot or you can purchase a card adapter separately. The most compact of the SD card family is the Micro SD card sometimes referred to as microSD which is used in small devices such as smartphones.

### What size are SD cards?

SD cards come in three different physical sizes, standard, mini and micro. The size you choose depends on which device you plan to use it in. Each SD memory card will have a capacity size in GB or MB which refers to the amount of data that can be stored on the card. Larger capacities will be more expensive so it is best to choose an SD memory card that meets your storage needs.

### Why would you need an SD card?

Most devices today come with built-in memory storage to a certain capacity. However, it is very easy to use their internal memory up, and that is where SD cards are useful. They add-on to your personal device that can greatly boost the amount of media you can store at one time. You will not have to worry about having to delete important photos from your camera, or music from your smartphone. With most SBCs, including Raspberry Pi, they run their OS from an SD Card. To shop Raspberry Pi micro SD cards preloaded with NOOBS, visit our sister site OKdo for all things Raspberry Pi and SBC.

### What is SDUC/SDXC/SDHC?
- SDUC/ microSDUC stands for Secure Digital Ultra Capacity. This supports memory cards up to 128TB.
- SDXC/ microSDXC stands for Secure Digital eXtended Capacity. SDXC cards support up to 2TB.
- SDHC/ microSDHC stands for Secure Digital High Capacity. SDHC card refers to SD cards which have a higher storage capacity, usually over 4GB.

### What is Speed Class?

Speed class is a standard developed by the SD association. Speed Class, UH Speed Class and Video Speed Class are given to indicate the minimum writing speed of a memory card. They include:

- Speed Class - 2, 4, 6, 10
- UH Speed Class - UHS-I, UHS-3
- Video Speed Class - V6, V10, V30, V60, V90

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SD Cards

Transcend 512 MB Industrial SD Flash Card SD Card

Transcend 128 GB MicroSDXC Micro SD Card, Class 30

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<p>SanDisk products brings extraordinary speed and reliability. A high-performance family of memory card readers to speed up your creative workflow.</p>

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<p>128GB Micro SD Cards are most used to expand storage capacity on devices such as smartphones, tablets, and cameras. Depending on the file size an SD card can provide enough capacity to store up to 24 hours&rsquo; worth of video and over 4000 images.</p>

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<p>16GB Micro SD Cards are most used to expand storage capacity on devices such as smart phones, tablets, and cameras. Depending on the file size an SD card can provide enough capacity to store over 800 images.</p>

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<p>32GB Micro SD Cards are most used to expand storage capacity on devices such as smartphones, tablets, and cameras. Depending on the file size an SD card can provide enough capacity to store over 4 hours of full HD videos and over 7000 photos.</p>

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<p>Kingston makes SD and microSD flash memory cards for a variety of devices, such as digital cameras, Android&trade; phones, drones, dashcams and security cams.</p><p>Features and benefits of Kingston MicroSD cards:</p><p>For industry-standard professional cameras shooting in 4K and 8K resolution</p><p>UHS-II video speed class (V90)</p><p>A1 app support for Android</p><p>Various capacities available: 64GB, 128GB, 256GB</p>

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<p>Micro SD cards, sometimes referred to as microSD, are memory cards used to store data in small devices. SD stands for secure digital and micro comes from its size. The microSD card is the smallest of the SD memory card family. </p><h2>What are micro SD cards used for?</h2><p>These memory cards are popular in portable devices, such as smartphones. Their compact size makes them ideal for smaller devices. If you would like to use your microSD memory card in a standard SD slot, you can purchase adapters separately. SD adapters enable you to connect your microSD card to SD or USB slots, for example, in PCs and laptops.</p><h2>What is capacity?</h2><p>Memory card capacity represents the amount of data that can be stored on the card. This is given in MB or GB, for example 4GB. Larger capacity memory cards tend to be more expensive. Therefore you should choose a card which is suitable for the amount of data you wish to store. </p><h2>What is SDUC/SDXC/SDHC?</h2><ul><li><strong>microSDUC</strong> stands for Secure Digital Ultra Capacity. This supports memory cards up to 128TB.</li><li><strong>microSDXC</strong> stands for Secure Digital eXtended Capacity. SDXC cards support up to 2TB.</li><li><strong>microSDHC</strong> stands for Secure Digital High Capacity. SDHC card refers to SD cards which have a higher storage capacity, usually over 4GB.</li></ul><h2>What is Speed Class?</h2><p>Speed class is a standard developed by the SD association. Speed Class, UH Speed Class and Video Speed Class are given to indicate the minimum writing speed of a memory card. They include:</p><ul><li>Speed Class - 2, 4, 6, 10</li><li>UH Speed Class - UHS-I, UHS-3</li><li>Video Speed Class - V6, V10, V30, V60, V90</li></ul>

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