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SAVE 27%
Lexar 512GB High-Performance 633x microSDHC/microSDXC UHS-I Cards BLUE Series

Lexar 512GB High-Performance 633x microSDHC/microSDXC UHS-I Cards BLUE Series

  • 512GB Capacity
  • UHS-I / U3 / Class 30
  • Max Read Speed: 95 MB/s
  • Max Write Speed: 70 MB/s
  • Min Write Speed: 10 MB/s
  • Record Full HD, 3D, and 4K Content
In stock Ships Tuesday
$94.95
You Pay: $68.95
$94.95
SAVE 12%
Lexar 128GB High-Performance 633x UHS-I microSDXC Memory Card with SD Adapter

Lexar 128GB High-Performance 633x UHS-I microSDXC Memory Card with SD Adapter

  • 128GB Capacity
  • UHS-I / U1 / Class 10
  • Max Read Speed: 95 MB/s
  • Max Write Speed: 20 MB/s
  • Min Write Speed: 10 MB/s
  • Record Full HD, 3D, and 4K Content
In stock Ships Tuesday
$24.95
You Pay: $21.95
$24.95
SAVE 13%
Lexar FLY microSDXC 256GB 160MB/s V30 A2 UHS-I U3 Memory Card for Drones

Lexar FLY microSDXC 256GB 160MB/s V30 A2 UHS-I U3 Memory Card for Drones

  • 256GB Capacity
  • UHS-I / V30 / U3 / Class 10
  • 160 MB/s Maximum Read Speed
  • 90 MB/s Maximum Write Speed
  • Records Full HD, 3D, and 4K Video
  • Shock / Vibration / X-Ray Proof
In stock Ships Tuesday
$52.95
You Pay: $45.95
$52.95
(1) review
SanDisk 128GB Extreme Pro UHS-I microSDXC Memory Card (200 MB/s)

SanDisk 128GB Extreme Pro UHS-I microSDXC Memory Card (200 MB/s)

  • Capacity: 128 GB
  • Read Speed: up to 200 MB/s
  • Write Speed: up to 90 MB/s
  • Video Speed: C10, U3
In stock Ships Tuesday
You Pay: $46.95
(1) review
SAVE 12%
Lexar 512GB PLAY UHS-I microSDXC Memory Card

Lexar 512GB PLAY UHS-I microSDXC Memory Card

  • 512GB Storage Capacity
  • UHS-I / A1 / V30 / U3 / Class 10
  • Max. Read Speed: 150 MB/s
  • Min. Write Speed: 30 MB/s
  • Records UHD 4K and Full HD Video
  • Can Withstand Temperature Extremes
In stock Ships Tuesday
$109.00
You Pay: $94.95
$109.00
SanDisk 256GB Extreme Pro UHS-I microSDXC Memory Card (200 MB/s)

SanDisk 256GB Extreme Pro UHS-I microSDXC Memory Card (200 MB/s)

  • Capacity: 256 GB
  • Compatible with SDXC and SDXC UHS-I enabled host devices.
  • Sequential Read Performance: up to 200MB/s
  • Sequential Write Performance: up to 140MB/s
In stock Ships Tuesday
You Pay: $79.95
SAVE 14%
Lexar 256GB Professional GOLD UHS-II microSDXC Memory Card

Lexar 256GB Professional GOLD UHS-II microSDXC Memory Card

  • 256GB Storage Capacity
  • UHS-II / V60 / U3 / Class 10 / A1
  • Max Read Speed: 280 MB/s
  • Max Write Speed: 180 MB/s
  • Min Write Speed: 60 MB/s
  • Records 4K and Full HD Video
In stock Ships Tuesday
$139.00
You Pay: $119.00
$139.00
SAVE 10%
Lexar 32GB High-Performance 633x microSDHC/microSDXC UHS-I Cards BLUE Series

Lexar 32GB High-Performance 633x microSDHC/microSDXC UHS-I Cards BLUE Series

  • 32GB Capacity
  • UHS-I / U1 / Class 10
  • Max Read Speed: 95 MB/s
  • Max Write Speed: 20 MB/s
  • Min Write Speed: 10 MB/s
  • Record Full HD, 3D, and 4K Content
In stock Ships Tuesday
$9.95
You Pay: $8.95
$9.95
SAVE 13%
Lexar 64GB Professional 1066x UHS-I microSDXC Memory Card with SD Adapter (SILVER Series)

Lexar 64GB Professional 1066x UHS-I microSDXC Memory Card with SD Adapter (SILVER Series)

  • 64GB Capacity
  • UHS-I / A2 / V30 / U3 / Class 10
  • Max Read Speed: 160 MB/s
  • Max Write Speed: 70 MB/s
  • Min Write Speed: 30 MB/s
  • Records Full HD, 3D, and 4K Video
In stock Ships Tuesday
$21.95
You Pay: $18.95
$21.95
SanDisk 64GB Extreme PRO UHS-I microSDXC Memory Card (U3, Class 10)

SanDisk 64GB Extreme PRO UHS-I microSDXC Memory Card (U3, Class 10)

  • 64GB Storage Capacity
  • Class 10 / UHS-I
  • UHS Speed Class 3 (U3)
  • Max. Read Speed: 200 MB/s
  • Max. Write Speed: 90 MB/s
In stock Ships Tuesday
You Pay: $26.95
(4) reviews
SAVE 14%
Lexar 128GB Professional GOLD UHS-II microSDXC Memory Card

Lexar 128GB Professional GOLD UHS-II microSDXC Memory Card

  • 128GB Storage Capacity
  • UHS-II / V60 / U3 / Class 10 / A1
  • Max Read Speed: 280 MB/s
  • Max Write Speed: 100 MB/s
  • Min Write Speed: 60 MB/s
  • Records 4K and Full HD Video
In stock Ships Tuesday
$67.95
You Pay: $57.95
$67.95
SanDisk 256GB Extreme UHS-I microSDXC Memory Card (190 MB/s) with SD Adapter

SanDisk 256GB Extreme UHS-I microSDXC Memory Card (190 MB/s) with SD Adapter

  • 256GB Storage Capacity
  • A2 / UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 190 MB/s
  • Max Write Speed: 130 MB/s
  • Min Write Speed: 30 MB/s
In stock Ships Tuesday
You Pay: $63.95
SanDisk 128GB Extreme UHS-I microSDXC Memory Card with SD Adapter

SanDisk 128GB Extreme UHS-I microSDXC Memory Card with SD Adapter

  • 128GB Storage Capacity
  • A2 / UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 190 MB/s
  • Max Write Speed: 90 MB/s
  • Min Write Speed: 30 MB/s
In stock Ships Tuesday
You Pay: $34.95
(1) review
Lexar 128GB Professional 1066x UHS-I microSDXC Memory Card with SD Adapter (SILVER Series)

Lexar 128GB Professional 1066x UHS-I microSDXC Memory Card with SD Adapter (SILVER Series)

  • 128GB Capacity
  • UHS-I / A2 / V30 / U3 / Class 10
  • Max Read Speed: 160 MB/s
  • Max Write Speed: 70 MB/s
  • Min Write Speed: 30 MB/s
  • Records Full HD, 3D, and 4K Video
In stock Ships Tuesday
You Pay: $31.95
Lexar 256GB Professional 1066x UHS-I microSDXC Memory Card with SD Adapter (SILVER Series)

Lexar 256GB Professional 1066x UHS-I microSDXC Memory Card with SD Adapter (SILVER Series)

  • 256GB Capacity
  • UHS-I / A2 / V30 / U3 / Class 10
  • Max Read Speed: 160 MB/s
  • Max Write Speed: 70 MB/s
  • Min Write Speed: 30 MB/s
  • Records Full HD, 3D, and 4K Video
In stock Ships Tuesday
You Pay: $53.95
SanDisk 256GB UHS-I microSDXC Memory Card for the Nintendo Switch

SanDisk 256GB UHS-I microSDXC Memory Card for the Nintendo Switch

  • 256GB Storage Capacity
  • UHS-I / U3 / Class 10
  • Max. Read Speed: 100 MB/s
  • Max. Write Speed: 90 MB/s
  • Min. Write Speed: 30 MB/s
In stock Ships Tuesday
You Pay: $71.95
SAVE 12%
SanDisk 128GB Ultra UHS-I microSDXC Memory Card (2-Pack)

SanDisk 128GB Ultra UHS-I microSDXC Memory Card (2-Pack)

  • 128GB Capacity per Card
  • UHS-I / Class 10
  • Max Read Speed: 100 MB/s
  • Min Write Speed: 10 MB/s
  • Records Full HD Video and Still Photos
  • Water / Shock / X-Ray Proof
In stock Ships Tuesday
$87.95
You Pay: $77.00
$87.95
SanDisk 1TB Extreme UHS-I microSDXC Memory Card with SD Adapter

SanDisk 1TB Extreme UHS-I microSDXC Memory Card with SD Adapter

  • 1TB Storage Capacity
  • A2 / UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 190 MB/s
  • Max Write Speed: 130 MB/s
  • Min Write Speed: 30 MB/s
  • Records Full HD, 3D, and 4K Video
In stock Ships Tuesday
You Pay: $229.00
SanDisk 128GB High Endurance UHS-I microSDXC Memory Card with SD Adapter

SanDisk 128GB High Endurance UHS-I microSDXC Memory Card with SD Adapter

  • 128GB Storage Capacity
  • UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 100 MB/s
  • Max Write Speed: 40 MB/s
  • Min Write Speed: 30 MB/s
In stock Ships Tuesday
You Pay: $38.95
SanDisk 32GB Extreme UHS-I microSDHC Memory Card with SD Adapter

SanDisk 32GB Extreme UHS-I microSDHC Memory Card with SD Adapter

  • 32GB Storage Capacity
  • A1 / UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 100 MB/s
  • Max Write Speed: 60 MB/s
  • Min Write Speed: 30 MB/s
In Stock with Supplier Usually ships in 2 - 3 working days what does this mean?
You Pay: $19.95
(1) review
SanDisk 128GB UHS-I microSDXC Memory Card for the Nintendo Switch

SanDisk 128GB UHS-I microSDXC Memory Card for the Nintendo Switch

  • 128GB Storage Capacity
  • UHS-I / U3 / Class 10
  • Max. Read Speed: 100 MB/s
  • Max. Write Speed: 90 MB/s
  • Min. Write Speed: 30 MB/s
In stock Ships Tuesday
You Pay: $51.95
(3) reviews
SanDisk 512GB UHS-I microSDXC Memory Card for the Nintendo Switch

SanDisk 512GB UHS-I microSDXC Memory Card for the Nintendo Switch

  • 512GB Storage Capacity
  • UHS-I / U3 / Class 10
  • Max. Read Speed: 100 MB/s
  • Max. Write Speed: 90 MB/s
  • Min. Write Speed: 30 MB/s
In stock Ships Tuesday
You Pay: $129.00
ADATA 128GB Premier microSD UHS-I A1 V10 Card (Class 10) with Adapter

ADATA 128GB Premier microSD UHS-I A1 V10 Card (Class 10) with Adapter

Class 10, UHS-I, Read/Write: 100MB/s / 25MB/s
In stock Ships Tuesday
You Pay: $18.95
(3) reviews
Lexar FLY microSDXC 128GB 160MB/s V30 A2 UHS-I U3 Memory Card for Drones

Lexar FLY microSDXC 128GB 160MB/s V30 A2 UHS-I U3 Memory Card for Drones

  • 128GB Capacity
  • UHS-I / V30 / U3 / Class 10
  • 160 MB/s Maximum Read Speed
  • 90 MB/s Maximum Write Speed
  • Records Full HD, 3D, and 4K Video
  • Shock / Vibration / X-Ray Proof
In stock Ships Tuesday
You Pay: $30.95
SanDisk 512GB Extreme UHS-I microSDXC Memory Card with SD Adapter (190 MB/s)

SanDisk 512GB Extreme UHS-I microSDXC Memory Card with SD Adapter (190 MB/s)

  • 512GB Storage Capacity
  • A2 / UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 190 MB/s
  • Max Write Speed: 130 MB/s
  • Min Write Speed: 30 MB/s
In stock Ships Tuesday
You Pay: $109.00
(1) review
SanDisk 512GB Ultra UHS-I microSDXC Memory Card with SD Adapter (150 MB/s)

SanDisk 512GB Ultra UHS-I microSDXC Memory Card with SD Adapter (150 MB/s)

  • 512GB Storage Capacity
  • UHS-I / U1 / Class 10 / A1
  • Max Read Speed: 150 MB/s
  • Min Write Speed: 10 MB/s
  • Records Full HD Video
  • Capture Raw and JPEG Photos
In stock Ships Tuesday
You Pay: $71.95
SanDisk 512GB Extreme Pro UHS-I microSDXC Memory Card (200 MB/s)

SanDisk 512GB Extreme Pro UHS-I microSDXC Memory Card (200 MB/s)

  • 512GB Capacity
  • Compatible with SDXC and SDXC UHS-I enabled host devices.
  • Sequential Read Performance up to 200MB/s
  • Sequential Write Performance up to 140MB/s
In stock Ships Tuesday
You Pay: $159.00
(1) review
ProGrade Digital MicroSDXC UHS-II Memory Card with Adapter (128GB)

ProGrade Digital MicroSDXC UHS-II Memory Card with Adapter (128GB)

  • Maximum Sustained Read Speed 250MB/s
  • Burst Write Speed 130MB/s
  • Minimum Sustained Write Speed 60MB/s
  • MicroSDXC UHS-II
In stock Ships Tuesday
You Pay: $119.00
(1) review
SanDisk 1TB Extreme PRO UHS-I SD Memory Card

SanDisk 1TB Extreme PRO UHS-I SD Memory Card

  • UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 200 MB/s
  • Max Write Speed: 140 MB/s
  • Min Write Speed: 30 MB/s
  • Records Full HD, 3D, and 4K Video
  • Built-In Write-Protect Switch
In stock Ships Tuesday
You Pay: $299.00
Lexar 64GB High-Performance 633x microSDHC/microSDXC UHS-I Cards BLUE Series

Lexar 64GB High-Performance 633x microSDHC/microSDXC UHS-I Cards BLUE Series

  • 64GB Capacity
  • UHS-I / U3 / Class 30
  • Max Read Speed: 95 MB/s
  • Max Write Speed: 20 MB/s
  • Min Write Speed: 10 MB/s
  • Record Full HD, 3D, and 4K Content
In stock Ships Tuesday
You Pay: $13.95
SanDisk 256GB High Endurance UHS-I microSDXC Memory Card with SD Adapter

SanDisk 256GB High Endurance UHS-I microSDXC Memory Card with SD Adapter

  • 256GB Storage Capacity
  • UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 100 MB/s
  • Max Write Speed: 40 MB/s
  • Min Write Speed: 30 MB/s
Estimated stock due 4th of April what does this mean?
You Pay: $58.95
(1) review
ADATA Premier microSDHC UHS-I A1 V10 Card with Adapter (32GB)

ADATA Premier microSDHC UHS-I A1 V10 Card with Adapter (32GB)

  • Enables uninterrupted recording of Full HD
  • Can record up to 10MB of video per second
  • Read speeds up to 100MB per second
  • Includes adaptor
In stock Ships Tuesday
You Pay: $6.95
SanDisk 64GB Extreme UHS-I microSDXC Memory Card with SD Adapter (170MB/s)

SanDisk 64GB Extreme UHS-I microSDXC Memory Card with SD Adapter (170MB/s)

  • 64GB Storage Capacity
  • A2 / UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 170 MB/s
  • Max Write Speed: 80 MB/s
  • Min Write Speed: 30 MB/s
  • Records Full HD and UHD 4K Video
In stock Ships Tuesday
You Pay: $28.95
ProGrade Digital MicroSDXC UHS-II Memory Card with Adapter (2-Pack, 128GB)

ProGrade Digital MicroSDXC UHS-II Memory Card with Adapter (2-Pack, 128GB)

  • Maximum Sustained Read Speed 250MB/s
  • Burst write Speed 130MB/s
  • Minimum Sustained Write Speed 60MB/s
  • microSDXC UHS-II
In stock Ships Tuesday
You Pay: $209.00
ADATA Premier ONE V90 UHS II Micro SDXC Card with Adapter (64GB)

ADATA Premier ONE V90 UHS II Micro SDXC Card with Adapter (64GB)

  • Ideal for Drones & 4K/8K Video
  • Speed class: UHS-II U3 CL10
  • R/W speed up to 275/155MB/s
  • V90 video speed class
  • Includes SD Adapter
In stock Ships Tuesday
You Pay: $66.95
ADATA Premier microSDXC UHS-I A1 V10 Card with Adapter (256GB)

ADATA Premier microSDXC UHS-I A1 V10 Card with Adapter (256GB)

  • Enables uninterrupted recording of Full HD
  • Can record up to 10MB of video per second
  • Read speeds up to 100MB per second
  • Includes adaptor
In stock Ships Tuesday
You Pay: $40.95
ADATA MicroSD 32GB Class10 UHS-1 (With Adapter)

ADATA MicroSD 32GB Class10 UHS-1 (With Adapter)

Boosts storage capacity and enhances transfer speeds.
In stock Ships Tuesday
You Pay: $6.95
SanDisk 32GB Extreme PRO UHS-I microSDHC Memory Card (U3, Class 10)

SanDisk 32GB Extreme PRO UHS-I microSDHC Memory Card (U3, Class 10)

  • 32GB Storage Capacity
  • Class 10 / UHS-I
  • UHS Speed Class 3 (U3)
  • Max. Read Speed: 95 MB/s
  • Max. Write Speed: 90 MB/s
In stock Ships Tuesday
You Pay: $24.95
(2) reviews
ADATA 64GB Premier microSDXC UHS-I Card (Class 10) with Adapter

ADATA 64GB Premier microSDXC UHS-I Card (Class 10) with Adapter

Implements the latest SDA 3.0 specification UHS-I (Ultra High Speed 1, in compliance with SD 2.0 Class 10 speed)
In stock Ships Tuesday
You Pay: $9.95
(2) reviews
ADATA 128GB Premier Pro microSDXC UHS-I U3 A2 V30 Card with Adapter

ADATA 128GB Premier Pro microSDXC UHS-I U3 A2 V30 Card with Adapter

  • Micro SDXC Card.
  • 128GB Capacity.
  • Class 10, UHS-I, U3, V30, A2.
  • Up to 100MB/s Read, Up to 80MB/s Write.
In stock Ships Tuesday
You Pay: $24.95
BlackVue MicroSD Card (128GB)

BlackVue MicroSD Card (128GB)

Optimised for BlackVue Dashcams
In stock Ships direct Tuesday
You Pay: $209.00
This item may be nonreturnable
ProGrade Digital MicroSDXC UHS-II Memory Card with Adapter (256GB)

ProGrade Digital MicroSDXC UHS-II Memory Card with Adapter (256GB)

  • Read Speed up to 250MB/s
  • Write Speed up to 130MB/s
  • microSDXC
In stock Ships direct Tuesday
You Pay: $229.00
This item may be nonreturnable
ADATA Premier Pro microSDXC UHS-I U3 A2 V30 Card with Adapter 512GB

ADATA Premier Pro microSDXC UHS-I U3 A2 V30 Card with Adapter 512GB

  • micro SDXC Card
  • 512GB Capacity
  • Class 10, UHS-I, U3, V30, A2
  • Up to 100MB/s Read, Up to 80MB/s Write
In stock Ships direct Tuesday
You Pay: $88.95
This item may be nonreturnable
Lexar 128GB High-Endurance microSDXC Card

Lexar 128GB High-Endurance microSDXC Card

  • Up to 100MB/s read, up to 45MB/s write
  • 24/7 video monitoring
  • High Durability
  • Fast Video Capture
In stock Ships Tuesday
You Pay: $34.95
SanDisk 256GB Extreme UHS-I microSDXC Memory Card for Mobile Gaming

SanDisk 256GB Extreme UHS-I microSDXC Memory Card for Mobile Gaming

  • 256GB Storage Capacity
  • A2 / UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 190 MB/s
  • Max Write Speed: 130 MB/s
  • Min Write Speed: 30 MB/s
In Stock with Supplier Usually ships in 4 - 6 working days what does this mean?
You Pay: $77.95
SanDisk 1TB Ultra UHS-I microSDXC Memory Card with SD Adapter

SanDisk 1TB Ultra UHS-I microSDXC Memory Card with SD Adapter

  • 1TB Storage Capacity
  • UHS-I / U1 / Class 10 / A1
  • Max Read Speed: 150 MB/s
  • Min Write Speed: 10 MB/s
  • Records Full HD Video
  • Capture Raw and JPEG Photos
In Stock with Supplier Usually ships in 4 - 6 working days what does this mean?
You Pay: $209.00
Transcend 8GB microSDHC Memory Card Premium 400x Class 10 UHS-I with microSD Adapter

Transcend 8GB microSDHC Memory Card Premium 400x Class 10 UHS-I with microSD Adapter

  • 8GB Storage Capacity
  • UHS-I / Class 10
  • Max. Read Speed: 60 MB/s
  • Max. Write Speed: 20 MB/s
  • Ultra High Speed Class 1
In Stock with Supplier Usually ships in 4 - 6 working days what does this mean?
You Pay: $19.95
SanDisk 256GB MAX ENDURANCE UHS-I microSDXC Memory Card with SD Adapter

SanDisk 256GB MAX ENDURANCE UHS-I microSDXC Memory Card with SD Adapter

  • 256GB Storage Capacity
  • UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 100 MB/s
  • Max Write Speed: 40 MB/s
  • Min Write Speed: 30 MB/s
In Stock with Supplier Usually ships in 4 - 6 working days what does this mean?
You Pay: $119.00
SanDisk 128GB Ultra UHS-I microSDXC Memory Card with SD Adapter

SanDisk 128GB Ultra UHS-I microSDXC Memory Card with SD Adapter

  • 128GB Storage Capacity
  • UHS-I / U1 / Class 10 / A1
  • Max Read Speed: 140 MB/s
  • Min Write Speed: 10 MB/s
  • Records Full HD Video
  • Capture Raw and JPEG Photos
In Stock with Supplier Usually ships in 4 - 6 working days what does this mean?
You Pay: $38.95
SanDisk 128GB Extreme UHS-I microSDXC Memory Card for Mobile Gaming

SanDisk 128GB Extreme UHS-I microSDXC Memory Card for Mobile Gaming

  • 128GB Storage Capacity
  • A2 / UHS-I / V30 / U3 / Class 10
  • Max Read Speed: 190 MB/s
  • Max Write Speed: 90 MB/s
  • Min Write Speed: 30 MB/s
  • Optimised for Mobile Gaming
In Stock with Supplier Usually ships in 4 - 6 working days what does this mean?
You Pay: $51.95

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MicroSD cards are compact, versatile storage solutions that have become ubiquitous in the world of portable electronics. These tiny memory cards have revolutionized the way we store and transfer data, providing a convenient and reliable means of expanding storage capacity in a wide range of devices, from smartphones and action cameras to drones and gaming consoles. To make informed choices when using microSD cards, it's essential to understand their specifications and capabilities.

What Are MicroSD Cards? MicroSD cards are a type of flash memory storage device that conforms to the SD (Secure Digital) card standard. They are significantly smaller than standard SD cards, making them ideal for devices where space is at a premium. Despite their diminutive size, microSD cards offer impressive storage capacity and data transfer speeds.

MicroSD Card Specifications MicroSD cards come in various specifications, each indicating different attributes and performance characteristics. Here are some key specifications you should be aware of:

  1. Capacity: MicroSD cards are available in a range of storage capacities, typically measured in gigabytes (GB) or terabytes (TB). Common capacities include 2GB, 4GB, 8GB, 16GB, 32GB, 64GB, 128GB, 256GB, and 512GB. The choice of capacity depends on your specific needs and the compatibility of your device.

  2. Speed Class: Speed class is a crucial specification for microSD cards, as it determines the minimum write speed required for specific tasks. Common speed classes include Class 2, Class 4, Class 6, and Class 10. For higher performance requirements, you may encounter UHS (Ultra High-Speed) classes like UHS-I U1 and U3, as well as video speed classes like V10, V30, V60, and V90. These classes indicate minimum write speeds, with UHS-I U1 offering a minimum write speed of 10 megabytes per second (MB/s) and UHS-I U3 delivering a minimum write speed of 30MB/s, which is suitable for 4K video recording and high-speed photography.

  3. Bus Interface: MicroSD cards use different bus interfaces to determine data transfer speeds. The most common bus interfaces include:

microSD: Standard data transfer speed up to 25MB/s. microSDHC (Secure Digital High Capacity): Data transfer speed up to 50MB/s and storage capacity from 2GB to 32GB. microSDXC (Secure Digital eXtended Capacity): Data transfer speed up to 104MB/s and storage capacity ranging from 32GB to 2TB. microSDUC (Secure Digital Ultra Capacity): An extension of microSDXC, supporting storage capacities beyond 2TB. 4. Application Performance Class: Like standard SD cards, microSD cards also feature Application Performance Class (A1 and A2) ratings. These classes ensure that the microSD card meets specific performance requirements for running apps smoothly on smartphones and other devices.

A1: Guarantees a minimum random read speed of 1500 IOPS (input/output operations per second) and a minimum random write speed of 500 IOPS. A2: Offers even better performance with a minimum random read speed of 4000 IOPS and a minimum random write speed of 2000 IOPS. 5. Compatibility: Before purchasing a microSD card, it's crucial to check your device's compatibility with both the physical size (microSD, microSDHC, or microSDXC) and the speed class of the card. Older devices may not support higher-capacity microSDXC cards or faster UHS-I or UHS-II bus interfaces.

  1. microSD Card Classes and Symbols: MicroSD cards are labeled with symbols representing their speed and performance capabilities, such as the Speed Class symbol (e.g., "10" for Class 10), UHS Speed Class symbol (e.g., "U1" for UHS-I U1), and Video Speed Class symbol (e.g., "V30" for 30MB/s minimum write speed for video recording).

MicroSD cards have become indispensable storage companions for modern portable devices, providing a flexible means of expanding storage capacity and transferring data quickly and reliably. To make the most of your microSD card, it's essential to consider factors like capacity, speed class, bus interface, application performance class, and compatibility with your device. As technology continues to advance, microSD cards are likely to offer even greater storage capacity and faster data transfer speeds, further enhancing their role in the digital world. Whether you're a photographer, gamer, or smartphone user, understanding microSD card specifications empowers you to choose the right card for your needs and ensure seamless data storage and retrieval.