UGREEN SD 4.0 Card Reader 312 MB/s

This compact USB C card adapter reads both SD and microSD cards and aims to speed up transfers for cameras, phones and laptops. The UGREEN SD 4.0 Card Reader supports the newer UHS-II protocol for faster file movement, making it useful when offloading high-resolution photos or 4K footage from an action camera or drone to a tablet or MacBook. If you need a small, portable reader that works with USB-C devices, this model is ready to plug in and go.

Key Points

The reader includes dual slots for SD and TF (microSD) cards and uses the UHS-II transmission standard, which the manufacturer states reaches up to 312 MB/s for read and write operations. It connects by USB-C using the USB 3.1 protocol and the interface supports transfer rates up to 5 Gbps. The cable-attached design helps avoid blocking adjacent ports on a laptop, and the aluminium alloy housing assists with heat dissipation during sustained transfers. 📸

Compatibility covers a broad range of devices with USB-C ports, from recent iPhone and iPad models through to MacBook Pro and Air, as well as major Android flagships such as Galaxy S and Xiaomi series. The reader is plug and play across Windows, macOS, Linux and Android, so no driver installation is required for the most common systems. The manufacturer also notes built-in protections for overcurrent, short circuit and overvoltage to help safeguard connected cards.

Technical Specifications

• Name: UGREEN SD 4.0 Card Reader
• Card support: SD, SDHC, SDXC, Micro SD, Micro SDHC, Micro SDXC
• UHS protocol: UHS-II, up to 312 MB/s
• Interface: USB-C with USB 3.1 support, up to 5 Gbps
• Housing: Aluminium alloy with braided nylon cable
• Compatibility: iPhone 17 series, iPad Pro/Air 2021–2022, MacBook Pro/Air M1/M2, Galaxy S25/S24/S23 series and other USB-C devices

Practical Tips

For faster transfers use UHS-II compatible SD cards and connect the reader to a USB-C port that supports USB 3.1 speeds to approach the rated throughput. If you are moving very large video files, allow a brief pause between long bursts to help control heat build-up, even though the metal casing aids cooling. For mobile use, keep the braided cable tucked to avoid strain on the device port and make the most of the compact form factor. ⚡

Advantages

This model is easy to carry and convenient for creatives who frequently transfer media between devices. It offers wider compatibility across ecosystems and faster transfer rates than UHS-I readers according to the manufacturer. The combination of plug-and-play operation, protective circuitry and a heat-dissipating case gives a pragmatic balance between speed and durability. 🔋