Card reader PREMIUMCORD ku31sd01 USB 3.1 Type-C — CFast 2.0, SD 3.0, microSD support

PremiumCord ku31sd01 is an external USB 3.1 Type-C card reader with slots for CFast 2.0, SD 3.0 (UHS-I) and microSD 3.0 (UHS-I). It provides high-speed read/write support for professional cameras and other devices that require fast offload of large video and photo files. The compact black aluminium housing and 20 cm cable make the reader convenient to carry with camera gear while supporting high-capacity cards used in 4K and other high-definition recording workflows.

Advantages

The card reader supports CFast 2.0 with up to 450 MB/s read and 350 MB/s write speeds and SD/microSD UHS-I (SD 3.0) transfer rates up to 40 MB/s. It is plug-and-play via USB-C, supports hot-swapping and is designed for continuous, long-term read/write operation. Its small dimensions and robust casing provide a balance of portability and durability for professional use.

Suitable for (tasks / use cases)

• Offloading 4K and high-definition video from professional cameras
• Transferring large RAW photo files from DSLRs and mirrorless cameras
• Working with multiple card formats (CFast 2.0, SD, microSD) in field and studio environments
• Quick backups and media management on laptops with USB-C ports

Key specifications

• Interface: USB 3.1 Type-C (plug-and-play)
• Card slots: CFast 2.0, SD 3.0 (UHS-I), microSD 3.0 (UHS-I)
• CFast 2.0 speeds: up to 450 MB/s read, 350 MB/s write
• SD/microSD (UHS-I) transfer rate: up to 40 MB/s
• Hot-swap support: yes
• Housing: black, compact professional casing
• Dimensions: 42.8 mm x 36.4 mm x 3.6 mm
• Cable length: 20 cm

How to use

Connect the reader to a USB-C port on a laptop or compatible device. Insert a CFast 2.0, SD or microSD card into the corresponding slot; the device supports hot-swapping so cards can be inserted and removed while the reader is connected. Use the operating system’s file manager or photo/video software to access, copy or move files between the card and the host device. No additional drivers are typically required for modern OS versions.

Usage recommendations

For reliable high-speed transfers, use certified CFast 2.0 and UHS-I SD/microSD cards that meet professional recording requirements. Avoid removing cards during active file transfers and keep the reader in a ventilated, dry environment during prolonged operation.