128GB PRO Ultimate UHS-I microSDXC card
Samsung PRO Ultimate 128GB MB-MY128SA-WW microSDXC card with SD adapter
The Samsung PRO Ultimate 128GB MB-MY128SA-WW microSDXC card combines 128GB capacity, read speeds up to 200MB/s, Up to 130MB/s, U3, V30 and A2 ratings and an included SD adapter for high-resolution capture, fast file transfer and compatible mobile or gaming devices.
- Capacity
- 128GB
- Read speed
- Up to 200MB/s
- Write speed
- Up to 130MB/s
- Speed class
- U3, V30 and A2
Creator-focused UHS-I performance in a 128GB card
The Samsung PRO Ultimate 128GB MB-MY128SA-WW provides U3, V30 and A2-rated removable storage for compatible 4K cameras, mobile devices, laptops and gaming systems. It combines up to 200MB/s read and 130MB/s write with six-proof durability.
Up to 200MB/s read
The exact 128GB card is rated for sequential reads up to 200MB/s with a compatible host and Samsung reader.
130MB/s write performance
Sequential writes up to 130MB/s support high-resolution capture and large transfers on compatible devices.
Defined speed classes
U3, V30 and A2 ratings help identify the card's verified application and video-performance class.
Compact microSDXC format
The 15 × 11 × 1 mm card includes a full-size SD adapter for supported host devices.
Six-proof durability
Samsung specifies water, temperature, X-ray, magnet, drop and wearout resistance under stated test conditions.
Limited warranty coverage
10-year limited warranty; adapter 1 year applies subject to Samsung's regional terms and exclusions.
Who is the Samsung PRO Ultimate 128GB MB-MY128SA-WW microSDXC card best for?
A strong choice for
- 4K UHD video capture on compatible devices
- High-resolution photography
- Drones and action cameras
- Android app and file storage
- Portable game libraries
Consider another model if you need
- Your host does not support microSDXC or UHS-I
- You need more than 128GB
- You need a card warranted for continuous surveillance
- Your workload requires faster than UHS-I
Key specifications
- Model
- MB-MY128SA-WW
- Family
- PRO Ultimate
- Capacity
- 128GB
- Product type
- microSDXC memory card
- Interface
- UHS-I, compatible with UHS interface
- Read speed
- Up to 200MB/s
- Write speed
- Up to 130MB/s
- Speed class
- U3, V30 and A2
- Durability
- 10,000 mating cycles
- Dimensions
- 15 × 11 × 1 mm
- Weight
- Approximately 0.25 g
- Accessory
- SD adapter
- Warranty
- 10-year limited warranty; adapter 1 year
Full technical specifications
Capacity, interface and performance
| Model | MB-MY128SA-WW |
|---|---|
| Family | PRO Ultimate |
| Rated capacity | 128GB |
| Product category | microSDXC memory card |
| Interface | UHS-I, compatible with UHS interface |
| Sequential read | Up to 200MB/s |
| Sequential write | Up to 130MB/s |
| Speed class | U3, V30 and A2 |
| Operating voltage | 2.7–3.6 V |
Physical and environmental
| Dimensions | 15 × 11 × 1 mm |
|---|---|
| Weight | Approximately 0.25 g |
| Operating temperature | -25°C to 85°C |
| Non-operating / storage temperature | -40°C to 85°C |
| Durability | 10,000 mating or insertion/removal cycles |
| Water protection | Up to 72 hours in 2 metres of seawater |
| Magnetic protection | Up to 15,000 gauss |
| X-ray protection | Up to 100 mGy |
| Drop protection | Up to 5 metres |
| EMC certifications | CE (UKCA), FCC, VCCI and RCM |
Application, endurance and warranty
| Positioning | Mobile devices, action and 360° cameras, drones, laptops and gaming consoles |
|---|---|
| Video support | 4K UHD supported on compatible hosts |
| Recording endurance | Not specified |
| Accessory | SD adapter included |
| Card warranty | 10-year limited warranty |
| SD adapter warranty | 1 year |
| Warranty limitation | Card warranty excludes dashcam, CCTV, surveillance and other write-intensive uses |
Frequently asked questions about the Samsung PRO Ultimate 128GB MB-MY128SA-WW microSDXC card
What is the MB-MY128SA-WW?
The MB-MY128SA-WW is Samsung's 128GB PRO Ultimate UHS-I microSDXC card supplied with an SD adapter.
What capacity does the MB-MY128SA-WW provide?
The rated capacity is 128GB. Actual usable capacity is lower because some space is used for formatting and system functions.
What read speed does the MB-MY128SA-WW support?
Samsung rates the MB-MY128SA-WW for sequential reads up to 200MB/s with compatible equipment.
What write speed does the MB-MY128SA-WW support?
Samsung rates the MB-MY128SA-WW for sequential writes up to 130MB/s with compatible equipment.
Which speed classes apply to the MB-MY128SA-WW?
The exact card is rated U3, V30 and A2.
What is the MB-MY128SA-WW designed for?
It is positioned for compatible mobile devices, cameras, drones, laptops, gaming consoles and 4K capture.
Does the MB-MY128SA-WW include an SD adapter?
Yes. Samsung lists a full-size SD adapter as the included accessory.
How durable is the MB-MY128SA-WW?
Samsung specifies water, temperature, X-ray, magnet, drop and wearout resistance under defined laboratory conditions.
What are the dimensions of the MB-MY128SA-WW?
The card measures 15 × 11 × 1 mm and weighs approximately 0.25 g.
What warranty applies to the MB-MY128SA-WW?
The card has a 10-year limited warranty, excluding dashcam, CCTV, surveillance and other write-intensive uses; the adapter warranty is one year.
- Check host compatibility before purchase.
- The 10-year card warranty excludes dashcam, CCTV, surveillance and other write-intensive uses.
- The SD adapter carries a one-year limited warranty.
- Actual speed and usable capacity vary by host and formatting.
