Upgrade the storage and performance of your mobile device using the 512GB 300S UHS-I microSDXC Memory Card from Transcend. Designed to retrieve small pieces of data from random locations and improving app launch times, the 300S has a capacity of 512GB, supports the UHS-I bus, and features a speed class rating of V30, which guarantees minimum write speeds of 30 MB/s. If your device does not support the V30 standard, this card also supports the U3 standard, which likewise guarantees minimum write speeds of 30 MB/s. Read speeds are supported up to 95 MB/s and write speeds max out at 40 MB/s, also making this card suitable for Full HD, 3D, and 4K Video, plus raw and JPEG still photos and bursts.

While this card has been designed for cameras that are UHS-I / V30 / U3 compatible, it may be used in devices that do not support UHS-I / V30 / U3. However, bear in mind that this card will then default to your device's speed class and bus rating, such as UHS-I and U1, which support minimum write speeds of 10 MB/s, or Class 10, which also supports minimum write speeds of 10 MB/s.

Aside from support for UHS-I, V30, and U3, Transcend also built this card with support for the Application Performance Class 1 (A1) spec, which includes optimizations to give Android users an improved mobile experience, delivering faster mobile app performance. The A1 spec allows the card to manage random read input-output access per second (IOPS) operations so it can quickly open apps and process accompanying tasks, such as audio, graphics, saved profiles, and in-app permissions.

As with most Transcend cards, this memory card is shockproof, X-ray proof, and waterproof, while also being able to withstand static, plus temperatures from -13 to 185°F, allowing you to take this card with you into extreme environments. Should the card's data become compromised, you also benefit from Transcend's free RecoveRx software for to help recover deleted content, including photos, documents, music, and videos. So that this card may be used in SD-compatible devices, a microSD to SD adapter is included.

512GB Storage Capacity    A1 / UHS-I / V30 / U3 / Class 10    Max Read Speed: 95 MB/s    Max Write Speed: 40 MB/s    Min Write Speed: 30 MB/s    Records Full HD, 3D, and 4K Video    Water / Static / Shock / X-Ray Proof    Can Withstand Extreme Temperatures    Free RecoveRx Software    Includes microSD to SD Adapter

It's common for users to install and run mobile apps from microSD cards in order to free up space on their device, making random read/write performance crucial. Transcend's 300S is a good fit for storing mobile apps.

The Application Performance Class 1 (A1) standard was introduced to adapt this trend of storing apps from microSD cards. This 300S memory card meets the A1 standard, delivering minimum random reads of 1500 IOPS, random writes of 500 IOPS, and sustained sequential speeds of at least 10 MB/s.

Transcend's 300S memory cards meet both the UHS Speed Class 3 (U3) and the UHS Video Speed Class 30 (V30) standards for 4K Ultra HD video recordings, with read/write speeds of up to 95 MB/s and 40 MB/s respectively, plus minimum write speeds of 30 MB/s.

In addition to strong random read/write performance, Transcend's 300S memory cards feature a storage capacity of 512GB, allowing you to keep more digital files and apps at hand.

To deliver improved performance and stability, Transcend's 300S microSD memory cards are tested to withstand extreme conditions.

Waterproof
Meets JIS IPX7 standards that can withstand immersion in 3.3' of water for up to 30 minutes.

Temperature Proof
Can operate in extreme temperatures ranging from -13 to 185°F.

Static Proof
Meets EMC IEC61000-4-2 standards and withstand static electricity.

X-Ray Proof
Meet the ISO7816-1 standard to resist airport X-rays.

Shock Proof
Provides resistance against shock, vibrations, bending, and twisting.

Transcend offers RecoveRx software, a free data recovery utility that allows you to search within a storage device for traces of erased files, including digital photos, documents, music, and videos.

Related Questions and Answers

Q: 1. Is this card compatible with GoPro Hero 7?

A: Yes it will

Q: 2. I have a very old digital camera, Panasonic DMC-ZS5. Does it work with this 512 GB memory card?

A: Technically it should work but as a 12mp camera, a 512GB card would be overkill in my opinion. A smaller card such as this 32GB is a better option: https://bhpho.to/2RMMn8V

Q: 3. are these reusable? ie. erasable?

A: Yes, the SanDisk 256GB ultra UHS-I microSDXC memory card with sd adapter following can be re-used after every formatting.

Q: 4. Is there a difference in the quality of the photo captured by SD card vs Micro SD?

A: No, the type of memory card used has no effect on the quality of the image written to the memory card, whether it is a full-sized SD/SDHC/SDHC memory card or a microSDHC memory card such as the SanDisk 32GB Extreme UHS-I microSDHC Memory Card with SD Adapter. The quality settings in your camera (and your lens' and image sensor's optical performance) will determine your image quality.

Q: 5. Will this work with the Sony a6300 on 4K 100 Mbps?

A: While this card has the proper V30 rating for 4K 100 Mb/s recording on the A6300, we do not recommend using Micro SD Cards with an adapter on a card that has a full size SD Card port. It is best practice to use the full size SD cards in a camera like the A6300. The SanDisk 128GB Extreme UHS-I SDXC Memory Card, B&H # SAESD128GBA, has the proper V30 rating as well and is a much better choice. https://bhpho.to/2NsxiKl

Q: 6. Is it Hyundai? Like real Hyundai? Hyundai Hyundai Hyundai???

A: Yes, the company is Hyundai. And they make the Hyundai 128GB UHS-I microSDXC Memory Card with SD Adapter. Hundai is into many industries from automotive to construction, shipbuilding, steel and technology.

Q: 7. works with sony a7iii?

A: would not recommend it , especially if you are planning on doing video

Q: 8. Will this card support continuous video at 4k120 on Sony xperia pro i?

A: The Sony Xperia Pro I does not have a record limit for the video shooting modes it offers. When you have the camera app open, click menu and then remaining memory format to see how much space and time is left to record on the internal memory or the memory card.

Q: 9. is this card good for GoPro11 ? thank you

A: Yes, SanDisk 256GB Extreme UHS-I microSDXC Memory Cards are compatible with all the recording quaility options in the GoPro HERO11 Black.

Q: 10. What is the actual size of Transcend 128GB 300S UHS-I microSDXC Memory Card ?

A: All microSD cards are the same size 15 mm × 11 mm × 1 mm (about the size of a fingernail)