UGREEN 6-in-2 USB-C Multifunction Adapter – CM380 Card Reader

The UGREEN CM380 is a compact USB-C hub that combines dual SD card slots with four USB 3.0 Type-A ports in a single aluminum enclosure. This 6-in-2 adapter supports simultaneous card reading at speeds up to 104MB/s and provides additional connectivity for peripherals, making it essential for students transferring media files and business professionals who need expanded port options during presentations or fieldwork. The bus-powered design eliminates the need for external power adapters in most scenarios.

Key Features & Benefits

• Dual SD Card Slots: Features both SD and Micro SD card readers that work simultaneously, which means photographers can import photos from their camera’s SD card while backing up drone footage from a Micro SD card without swapping cards or waiting for sequential transfers.
• Four USB 3.0 Ports: Provides four additional USB Type-A connections supporting speeds up to 5Gbps each, so you can connect flash drives, keyboards, mice, and external storage simultaneously without sacrificing your laptop’s limited USB-C ports for basic peripherals.
• High-Speed Card Reading: Achieves transfer speeds up to 104MB/s on UHS-I compatible cards, which means a 64GB SD card full of photos downloads in approximately 10 minutes instead of the hour-plus required by older USB 2.0 card readers.
• Aluminum Alloy Construction: Durable metal housing dissipates heat during extended file transfers and withstands the wear of daily transport in bags, while the compact design occupies minimal desk space when connecting multiple devices.
• Universal USB-C Compatibility: Works with any device featuring a USB-C port including MacBook Pro/Air, iPad Pro, Windows laptops, Chromebooks, and Android tablets without requiring driver installation or separate power supplies for standard peripherals.

Technical Specifications

Port Configuration

• USB-C Input: 1 × USB-C 3.0 male connector (host connection)
• USB-A Outputs: 4 × USB 3.0 Type-A female ports
• SD Card Slot: 1 × SD/SDHC/SDXC card reader (UHS-I)
• Micro SD Slot: 1 × Micro SD/SDHC/SDXC card reader (UHS-I)
• Total Ports: 6 functions from 2 card slots + 4 USB ports

Performance Specifications

• USB Data Speed: Up to 5Gbps per USB 3.0 port
• Card Reader Speed: Up to 104MB/s (UHS-I compatible)
• Simultaneous Operation: Both card slots can read/write simultaneously
• Power Delivery: Bus-powered up to 900mA total across all ports
• Note: Power-hungry devices may require external powered hub

Card Compatibility

• SD Cards: SD, SDHC (up to 32GB), SDXC (up to 2TB), UHS-I
• Micro SD Cards: Micro SD, Micro SDHC, Micro SDXC, UHS-I
• Speed Classes: Class 10, U1, U3 cards supported
• File Systems: FAT32, exFAT, NTFS (read-only on some systems)

USB Port Specifications

• USB Standard: USB 3.0/3.1 Gen 1 (backward compatible with USB 2.0)
• Per-Port Current: Up to 900mA at 5V per port
• Aggregate Bandwidth: 5Gbps shared across all four USB ports
• Device Support: Keyboards, mice, flash drives, hard drives, printers, cameras

Physical Specifications

• Dimensions: 4.13 × 1.54 × 0.55 inches (105 × 39 × 14mm)
• Cable Length: 5.9 inches (15cm) attached USB-C cable
• Weight: 2.12 oz (60g)
• Material: Aluminum alloy housing with ABS plastic card slots
• Color: Space gray with black accents

Construction Details

• Housing: Anodized aluminum for heat dissipation
• Cable: Braided nylon reinforced with strain relief
• LED Indicator: Activity lights for card reader operations
• Ventilation: Heat dissipation grooves in aluminum shell

System Compatibility

• Operating Systems: Windows 11/10/8/7, macOS 10.12+, Chrome OS, Linux, iPadOS 13+
• Devices: MacBook Pro/Air (2016+), iPad Pro, Dell XPS, HP Spectre, Surface, Chromebooks
• Driver Requirements: Plug-and-play (no drivers needed)
• USB-C Requirements: Data-capable USB-C port (some charging-only ports won’t work)

Standards & Certifications

• USB-IF Compliant: Meets USB 3.0 specifications
• CE Certified: European safety standards
• FCC Certified: Electromagnetic interference compliance
• RoHS Compliant: Environmentally friendly materials

Use Cases & Applications

For Students: Photography and film students can use the CM380 to simultaneously import footage from multiple memory cards after shoots while keeping USB ports available for external hard drives receiving the transferred files. Design students working on graphics-intensive projects benefit from connecting drawing tablets, external mice, and flash drives simultaneously without disconnecting peripherals. The compact size fits easily into backpacks alongside laptops for use in computer labs or studio spaces.

For Content Creators: Videographers shooting with multiple cameras or drones can ingest footage from several SD and Micro SD cards in parallel, dramatically reducing post-shoot workflow time. The four USB ports allow simultaneous connection of external SSDs for backup, color calibration devices, and control surfaces without requiring additional hubs. Travel photographers benefit from the lightweight design when editing on location—connect card readers and backup drives through one compact adapter rather than carrying multiple dongles.

For Business Presentations: Professionals delivering presentations can use the CM380 to connect wireless presenter remotes, USB flash drives with backup files, and wired mice simultaneously while keeping their laptop’s other USB-C ports available for charging or external displays. The aluminum construction withstands frequent travel between client sites and conference venues.

For Mobile Workstations: Remote workers using tablets or lightweight laptops as primary computers gain desktop-like connectivity through the CM380. Connect full-size keyboards, mice, external storage, and read memory cards from cameras or smartphones without purchasing separate adapters for each function. The bus-powered design means no additional outlet consumption in coffee shops or co-working spaces.

For Data Management: IT professionals performing system migrations or data consolidation can transfer files from SD cards while simultaneously connecting multiple USB flash drives or external storage devices. The simultaneous card reading capability proves valuable when archiving photos or videos from multiple sources during backup operations.

For Field Research: Scientists and researchers collecting data on portable devices using SD or Micro SD storage can quickly transfer field data to laptops while maintaining connections to USB peripherals like GPS devices, data loggers, or portable printers. The durable aluminum construction withstands outdoor field conditions better than plastic alternatives.

For iPad Pro Workflows: iPad Pro users gain desktop-class connectivity for importing photos from cameras, connecting external storage, and using USB accessories like MIDI controllers or audio interfaces. The hub transforms the iPad into a viable mobile workstation for creative professionals who previously required laptops for these workflows.

The UGREEN CM380 provides comprehensive connectivity for USB-C devices at a reasonable price point. However, understand that the 5Gbps USB 3.0 bandwidth is shared across all four USB ports, so connecting multiple high-speed devices simultaneously may result in reduced individual transfer speeds. For instance, transferring large files on two USB drives at once will split the available bandwidth rather than each achieving full 5Gbps speeds.

The bus-powered design works well for keyboards, mice, flash drives, and card readers, but power-hungry devices like external hard drives without their own power supplies may not function reliably when multiple devices draw power simultaneously. If you plan to connect devices requiring more than 900mA total, consider a powered USB hub instead. Some USB-C ports on older or budget devices are charging-only and won’t support data transfer—verify your device has a data-capable USB-C port before purchasing.

Card reading speeds depend on your card’s specifications—older Class 10 cards won’t achieve the full 104MB/s potential, while UHS-I U3 cards will perform optimally. The simultaneous dual-slot reading is genuine parallel operation, not just convenience slots, which means you can truly save time during multi-card transfers. When using both card slots, ensure adequate cooling by placing the adapter on a desk surface rather than burying it under papers, as sustained transfers generate heat that the aluminum housing needs to dissipate.

The 5.9-inch attached cable provides flexibility for positioning the hub without strain on your laptop’s USB-C port, but this fixed cable means you cannot replace it if damaged—handle the cable junction points carefully to maximize longevity. For devices with USB-C ports on different sides or unconventional positions, verify the cable length accommodates your specific laptop’s port placement before purchasing.