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A small black microSDXC card with a full-size SD adapter included

SAMSUNG

SAMSUNG T9 microSDXC 128GB 200MB/s U3 V30 A2 MB-MH128T

SKU CH-W6WT-HP4GY

microSDXC card with 128GB capacity and up to 200MB/s read speed for 4K capture and fast app loading

  • Total capacity128 GB
  • Memory card formatMicroSD
  • Speed classUHS-I U3 4K A2 V30
  • Max read speedUp to 200 MB/s
  • Product typeMicroSDXC

Capacity 128GB

  • Read speeds up to 200 MB/s for fast data access
  • Write speeds up to 130 MB/s for quick file transfers
  • 128 GB capacity stores large game libraries and media
  • U3, V30 and A2 ratings support 4K video and app performance
  • 6-proof durability protects against water, temperature, x-ray, magnet, drop and wear

Samsung T9 microSDXC 128GB

This Samsung T9 microSDXC card provides 128GB of storage for devices with a microSD slot. It targets mobile gamers, drone operators and content creators who need fast read speeds for loading games or capturing 4K video. The UHS-I U3, V30 and A2 ratings confirm suitability for sustained video recording and quick app launches. An SD adapter is included for use in full-size card readers.

Thermals noise and power

As a solid-state memory card with no moving parts, the T9 operates silently and generates minimal heat during typical read or write tasks. Power draw is limited to the host device's microSD interface, so it does not affect battery life in cameras, drones or handheld consoles. No active cooling or special thermal management is required for normal operation.

U3 V30 A2 speed ratings

The U3 and V30 markings guarantee a minimum sequential write speed of 30 MB/s, which is the decisive factor for reliable 4K video capture without dropped frames. The A2 rating ensures higher random IOPS for faster application loading on Android devices or gaming handhelds. Maximum read speed reaches 200 MB/s, while write speed peaks at 130 MB/s. Buyers who need sustained write throughput above 30 MB/s for higher-bitrate codecs should verify their device supports a faster bus standard.

How it compares

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

Price $51.99
Typical for this category: the median of 1,947 items is $46.99.
Total capacity 128 GB
Higher than about 60% of the 1,132 comparable items (median 64 GB).
Price per TB $406.17 per TB
Typical for this category: the median of 901 items is $374.69 per TB.

Specifications

Product
Brand nameSAMSUNG
Product lineT9 microSD
Model nameMB-MH128T
Part numberMB-MH128T
Total capacity128 GB
Product typeMicroSDXC
Performance
Speed classUHS-I U3 4K A2 V30
Max read speedUp to 200 MB/s
Storage
Memory card formatMicroSD

Other versions of this model

5 more in the same range

Questions about this item

How do I install the microSDXC card and adapter, and what step do people often get wrong?

Insert the 128GB card label‑up until it clicks, then slide the adapter into the device’s full‑size SD slot; the common mistake is forcing the card in upside‑down, which bends the contacts.

What maintenance or replacement will the T9 card need over its life?

No scheduled maintenance is required; the 6‑proof design resists water, temperature extremes, X‑rays, magnets and drops, so replacement only occurs if physical damage or capacity limits are reached.

What limit appears first during sustained 4K recording on this card?

The V30 rating guarantees a minimum 30 MB/s write floor; once the 130 MB/s peak write buffer fills, sustained throughput settles at that 30 MB/s floor.

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