The differences between the formats are significant: microSD: has a capacity of up to 2GB and works in any microSD slot. microSDHC: has a capacity of more than 2GB and up to 32GB and works in hardware that supports either SDHC and SDXC.

Class 10
The SanDisk Ultra microSDHC UHS-I Card is Class 10, letting you capture smooth Full HD (1) video without interruption.

TECH. Secure Digital High Capacity memory cards store between 2GB and 32GB of data, including a protected area responsible for maintaining security. Because they can store up to 32GB, the optimal file system with which to format an SDHC card is FAT32, which provides high-performance data transfer for disks this size.

Begin by inserting your USB card reader into one of your PC’s available USB ports. Next, insert your SanDisk MicroSD card into the memory card adapter and insert that adapter into the card reader. After inserting your SD card, go to your PC, and click the Start menu located in the bottom of your screen.

2 Answers. Micro SD to SD adaptors are just passive wiring adaptors. So they should not have any impact on speed.

SDHC (high capacity) cards can store up to 32 GB of data, while SDXC (extended capacity) cards can store up to 2 terabytes (2000 GB). Older devices may not be able to use the SDXC format, so make sure your device does support these larger cards before buying one.

The SD Association devised a way to standardise the speed ratings for different cards. These are defined as ‘Speed Class’ and refer to the absolute minimum sustained write speeds. Cards can be rated as Class 2 (minimum write speed of 2MB/s), Class 4 (4MB/s), Class 6 (6MB/s) or Class 10 (10MB/s).

How Can You Check the Class on Your MicroSD Card?

1. Take your MicroSD card out of the device it is in.
2. Turn the card to the side that has “MicroSD” written on it.
3. Look for the “C” that has a number inside of it; it is located under “MicroSD.” The number inside the “C” represents the class of your MicroSD card.

Insert your SDHC card into your computer’s SD card slot. If your computer doesn’t have a slot, plug in your external card reader, and then insert the card into the reader. Insert the card with the label facing up, putting the contacts on the bottom of the card in first.

A SanDisk adapter is a PC card you insert into your laptop that lets you transfer data between devices such as phones. The SanDisk adapter lets you insert the phone’s memory card to transfer data.

Class 4 microSD cards have a sustained writing speed of 4 MB per second. These work with a normal bus and are suitable for tasks such as full HD video recording.

Class 4 SD Card. SD cards are also commonly known as a non-volatile memory card for your gadgets and devices. To put it simply, it is a storage device in which you can store and retrieve data files without the need of power. Now with your SD’s speed class rating, it will be measured with its minimum serial data writing speed.

Class 4 – 4MB/s (32Mbps) A Class 4 memory card is the second slowest Class of memory card and can have data written to it at a minimum speed of 4 Megabytes (32 Megabits) per second.