SD Cards


Transcend's SDXC 340S memory cards provide the performance and capacity necessary to harness the full power of your UHS-I compliant DSLR cameras and camcorders. In addition to incredible transfer speeds, the cards are Video Speed Class 30 (V30)-compliant, allowing for smooth, uninterrupted 4K video capture.

The professional's choice

Transcend's SDXC 340S memory cards are manufactured with top-tier 3D NAND flash memory for great reliability. The cards are ideal for use with advanced camcorders and DSLR cameras, offering professional photographers and videographers impressive transfer rates to shoot in fast-action burst mode without dropping frames.

Show the transfer capabilities

Transcend's SDXC 340S memory cards meet both the UHS Speed Class 3 (U3) and the Video Speed Class 30 (V30) standards for 4K Ultra HD video recordings, with read/write speeds of up to 160MB/s and 90MB/s respectively. They are also compliant with the latest A2 specification for high mobile performance.

Notes: 1. Speeds based on internal testing. Advanced technology implemented to reach R/W speeds beyond UHS-I 104 MB/s. Full performance achieved only when paired with Transcend HUB5C card reader with the latest firmware update. 2. Please make sure your device supports the SD 6.0 specification or later to reach the optimal A2 performance.

Store as much as you wish

With up to 512GB storage capacity, Transcend's SDXC 340S memory cards allow for thousands of photos and hours of 4K Ultra HD videos to be recorded, meaning you can stay focused on capturing fantastic moments without worrying about running out of storage.

Built for extremes

To deliver the best performance and stability, Transcend's SD memory cards are tested to withstand extreme conditions. They are temperature resistant, waterproof, shock proof, X-ray proof, and static proof.

RecoveRx software

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

Learn more



Dimensions32 mm x 24 mm x 2.1 mm (1.26" x 0.94" x 0.08")
Weight2 g (0.07 oz)


  • 64 GB
  • 128 GB
  • 256 GB
  • 512 GB
Flash Type
  • 3D NAND flash

Operating Environment

Operating Temperature-25°C (-13°F) ~ 85°C (185°F)
Operating Voltage
  • 2.7V ~ 3.6V


Speed Class
  • UHS-I U3
  • V30
  • A1
  • A2
Sequential Read/Write (CrystalDiskMark)
  • TB
    Up to 160/90 MB/s
  • 512 GB
    Up to 160/90 MB/s
  • 256 GB
    Up to 160/90 MB/s
  • 128 GB
    Up to 160/90 MB/s
  • 64 GB
    Up to 160/50 MB/s
  • GB
    Up to / MB/s
  • GB
    Up to / MB/s
  • GB
    Up to / MB/s
  • GB
    Up to / MB/s
Insertion/Removal Cycles10,000
  • Speed may vary due to host hardware, software, usage, and storage capacity.


  • CE
  • UKCA
  • FCC
  • EAC
  • RCM
  • Five-year Limited Warranty
Warranty Policy
  • Please click here for more information about the Transcend Warranty Policy.

Order Information

  • TS64GSDC340S SDXC, U3, V30, A1
  • TS128GSDC340S SDXC, U3, V30, A2
  • TS256GSDC340S SDXC, U3, V30, A2
  • TS512GSDC340S SDXC, U3, V30, A2

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