Samsung MB-MD128S 128 GB MicroSDXC UHS-I Class 10

The Samsung MB-MD128S MicroSDXC 128GB UHS-I Class 10 card provides high-capacity removable storage with fast sustained performance. Designed for devices that accept microSDXC media, this card delivers up to 180 MB/s read speed and up to 130 MB/s write speed, and carries a V30 Video Speed Class rating suitable for 4K video capture. The card’s 128 GB capacity and Class 10 performance make it appropriate for smartphones, tablets, action cameras and other consumer devices requiring reliable, high-speed storage.

Advantages

This MicroSDXC card combines a large 128 GB capacity with UHS-I interface speed and Class 10 performance, enabling rapid file transfers and steady recording. Read speeds of up to 180 MB/s reduce waiting time when transferring photos and videos, while write speeds up to 130 MB/s support continuous recording and quick buffer clearing. The V30 rating ensures sustained write bandwidth for 4K video. The card is compact, lightweight (approximately 0.0003 kg) and compatible with a wide range of microSDXC-capable devices.

Suitable for

• Recording 4K and Full HD video in smartphones, action cameras and drones
• Storage expansion for tablets and Android phones
• High-speed transfer of large photo and video files to PCs
• Use in compact cameras and dashcams that support microSDXC and V30

Key specifications

• Brand: Samsung
• Model / MPN: MB-MD128SB/WW
• EAN: 8806094780710
• Capacity: 128 GB
• Flash card type: MicroSDXC
• Interface / Speed class: UHS-I / Class 10
• Read speed: up to 180 MB/s
• Write speed: up to 130 MB/s
• Video Speed Class: V30
• Color: Blue
• Weight: approx. 0.0003 kg

How to use

Insert the MicroSDXC card into the microSD slot of a compatible device following the device manufacturer’s instructions. For the first use, format the card in the host device to ensure file-system compatibility and optimal performance. When recording high-bitrate video, select an appropriate recording mode that matches the V30 rating to avoid dropped frames. For file transfers, use the device’s USB connection or a card reader that supports UHS-I speeds to achieve maximum read/write performance.

Recommendations

Store the card in a protective case when not installed to prevent physical damage and avoid exposing it to extreme temperatures, moisture or strong magnetic fields. Regularly back up important data to another storage medium. If performance issues occur, reformat the card in the host device after backing up data and ensure the device firmware supports the listed speeds and the microSDXC standard.