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A plain white SDXC card and a small black USB 2.0 reader in clear plastic cases

3C Expert

3C Expert 128GB SDXC UHS-I Class 10 50MB/s 15MB/s with USB 2.0 Reader

SKU CH-3V0X-08SAB

128 GB SDXC card rated UHS-I Class 10 reads up to 50 MB/s and writes up to 15 MB/s, bundled with a USB 2.0 reader

  • Total capacity128 GB
  • Speed classUHS-I / Class 10
  • Max read speedRead: up to 50 MB/s (Test Matrix)
  • Write throughputWrite" up to 15 MB/s (Test Matrix)
  • Product typeSecure Digital Extended Capacity (SDXC)
  • 128 GB capacity stores thousands of photos and videos
  • UHS-I Class 10 rating supports full HD recording
  • Read speeds up to 50 MB/s transfer files quickly
  • Write speeds up to 15 MB/s keep up with continuous shooting
  • USB 2.0 reader included for instant computer access

128 GB SDXC card with UHS-I Class 10

This 128 GB SDXC memory card uses the UHS-I interface and carries a Class 10 speed rating. It is suited for cameras, camcorders, smartphones and other portable devices that accept SDXC media. An OEM USB 2.0 card reader is included for immediate data transfer.

No-driver installation with USB 2.0 reader

The card works instantly in any SDXC-compatible slot without extra software. The bundled USB 2.0 reader connects to a standard Type-A port and requires no drivers on modern operating systems. The main limitation is the reader’s USB 2.0 interface, which caps transfer rates well below the card’s own read potential.

128 GB capacity with 50 MB/s read and 15 MB/s write

The 128 GB capacity stores thousands of high-resolution photos or hours of Full HD video. Sequential read speeds reach up to 50 MB/s and write speeds up to 15 MB/s under test conditions. Sustained 4K video recording or rapid burst shooting may exceed the available write headroom.

How it compares

Measured against everything we stock in SD & MicroSD Memory Cards, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 76% of the 1,947 comparable items (median $46.99).
Total capacity 128 GB
Higher than about 60% of the 1,132 comparable items (median 64 GB).
Price per TB $171.80 per TB
Cheaper than about 87% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Total capacity128 GB
Product typeSecure Digital Extended Capacity (SDXC)
Performance
Speed classUHS-I / Class 10
Max read speedRead: up to 50 MB/s (Test Matrix)
Write throughputWrite" up to 15 MB/s (Test Matrix)

Questions about this item

How can I verify the SDXC card reaches the rated 50 MB/s read and 15 MB/s write after setup?

Insert the card into the included USB 2.0 reader, connect to a computer, and run a benchmark tool such as CrystalDiskMark or H2testw; compare the sequential results with the stated 50 MB/s read and 15 MB/s write figures.

What items are included and what must I buy separately for this 128 GB SDXC card?

The box contains the 128 GB SDXC card in a plastic case and an OEM USB 2.0 card reader; no retail packaging, adapter, or cable is supplied, so purchase any needed microSD adapter or longer USB cable separately.

Which capacity and speed version should I choose for Full HD video on this listing?

This listing offers a single 128 GB capacity with UHS-I Class 10 ratings (up to 50 MB/s read, 15 MB/s write), suitable for Full HD recording; no other capacity or speed tier is available here.

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