StarTech.com 4 port USB 3.1 External Card Reader for MMC, SD Memory Cards

This USB-C™ SD™ card reader lets you access four SD cards simultaneously.

You can:

Download and edit photos and videos
Back up documents and critical data from multiple users
Deploy system updates in batches
Distribute content to multiple employees


The card reader transfers files between your USB-C, Thunderbolt 3 or USB-A laptop or desktop computer and the reader.

Ultra-Fast Read/Write Access

The reader features SD 4.0 and UHS-II support. It reads and writes to and from the cards at speeds of up to 312MB/s. The reader also supports USB 3.1 connection speeds of up to 10Gbps to ensure maximum transfer rates between the computer and the reader, while simultaneously accessing all four cards.

The card reader is also backward compatible with earlier versions of USB (3.0, 2.0 and 1.1).

Multi SD Card Reader Supports All SD Card Types

The card reader supports all SD cards: SD (Secure Digital), SDHC™ (Secure Digital High Capacity) and SDXC™ (Secure Digital Extended Capacity). It also supports UHS cards, and is backward compatible with older SD card versions.

The card reader will also support the following card types when connected through an adapter:


microSD™
miniSD™
MMCmobile™
RS-MMC™
MMCplus™

Compact Design

The small footprint design fits in nicely with your workstation. Place the card reader on your desk without taking up too much space.

4SD4FCRU31C comes with a StarTech.com 2-year warranty and free lifetime technical support.

• Save time and access four SD cards simultaneously with this multi SD card reader
• Ensure maximum transfer rates while accessing all four cards with connection speeds of up to 10Gbps
• Perform fast read and/or writes with support for SD 4.0, UHS-II and bus speeds up to 312MB/s
• Access more cards, the card reader supports all SD types: SD, SDHC, and SDXC
• Easily integrate this USB-C SD card reader into your workstation with its compact design

• Access four SD cards simultaneously

• SD card reader
• 3 ft. [0.9 m] USB-C to USB-C cable
• 3 ft. [0.9 m] USB-A to USB-C cable
• universal power adapter (NA/JP, EU, UK, ANZ)
• quick-start guide

What is USBC-C?

USB-C is a one of the latest advancements in USB connectivity. This USB connector type can carry video and data. This single connector supports multiple protocols and can carry everything from USB 1.1 to USB 3.2 Gen 2x2, as well as DisplayPort and HDMI (via Alt modes) and Thunderbolt 3 (on Thunderbolt 3 equipped laptops). This type can support the following:
Data transfer speeds up to 10Gbps, if you use USB 3.1.
Bi-directional power delivery up to 100W, if both the USB host connection and the device support it.