UGREEN CM387 3-in-1 USB-C SD Card Reader – Dual Card Support & USB-A Expansion
1,350.00৳
UGREEN CM387 3-in-1 USB-C SD Card Reader – Dual Card Support & USB-A Expansion
The UGREEN CM387 3-in-1 USB-C SD Card Reader is a compact multifunctional adapter designed to make transferring files between memory cards and compatible computers, tablets and smartphones easier. Its three-in-one design combines a full-size SD card slot, a microSD/TF card slot and an additional USB-A port in one convenient accessory.
With support for simultaneous access to both memory card slots, the CM387 lets you work with files from SD and microSD cards without repeatedly swapping readers. The USB-A expansion port can also connect compatible peripherals such as a flash drive, mouse, keyboard or wireless receiver.
Whether you’re transferring photos from a camera, accessing files from a microSD card or connecting an additional USB accessory, the UGREEN CM387 offers a practical solution for compatible USB-C devices.
Common Problems with Memory Card Transfers
Transferring files can become inconvenient when your computer or mobile device lacks the required card slots.
Common problems include:
- No built-in SD or microSD card reader
- Repeatedly swapping cards between devices
- Difficulty transferring photos and videos
- Limited ports on modern laptops
- Needing separate adapters for different memory cards
- Difficulty connecting an additional USB peripheral
- Extra accessories taking up space in a laptop bag
The UGREEN CM387 combines card reading and USB-A expansion in one compact adapter to help simplify these everyday tasks.
Smart Solution: Three Functions in One Adapter
The UGREEN CM387 combines three connection options:
- SD card slot: For compatible full-size SD memory cards.
- microSD/TF card slot: For compatible microSD memory cards.
- USB-A port: For connecting supported USB peripherals.
Both memory card slots can be accessed simultaneously on compatible host devices, making it easier to manage files from two cards. The USB-A port is a USB 2.0 connection, with a theoretical maximum transfer rate of 480Mbps.
Key Features
1. Three-in-One Multifunctional Design
The CM387 combines an SD card reader, a microSD/TF card reader and a USB-A expansion port in one adapter.
This reduces the need to carry multiple separate accessories when working with compatible memory cards and USB devices.
2. Dual Memory Card Slots
The reader features two dedicated slots:
- One full-size SD slot
- One microSD/TF slot
It supports commonly used SD and microSD card formats, including SDHC, SDXC, microSDHC and microSDXC, subject to host compatibility.
3. Simultaneous Card Access
The CM387 supports access to both memory card slots at the same time on compatible systems.
This is useful when transferring photos from a camera card while accessing files from a microSD card. Actual transfer performance depends on the cards, host device and workload.
4. USB-A Expansion Port
The additional USB-A port allows you to connect compatible devices such as:
- USB flash drives
- Keyboards
- Mice
- Wireless keyboard or mouse receivers
- Other supported USB peripherals
The extra port uses USB 2.0, with a theoretical maximum transfer rate of 480Mbps. It is intended for convenient peripheral connectivity rather than high-speed USB 3.0 transfers. citeturn457464search3turn457464search9
5. USB-C Host Connection
The adapter connects through a USB-C plug, making it suitable for compatible USB-C laptops, tablets and OTG-enabled smartphones.
The host device must support data transfer or USB OTG as applicable; having a USB-C connector alone does not guarantee compatibility. citeturn457464search0turn457464search5
6. High-Speed Data Interface
UGREEN advertises a data interface of up to 5Gbps for the card-reader connection. This is the interface’s theoretical signaling rate, not a guarantee that every memory card will transfer files at that speed. Actual performance depends on the card standard, card speed, host port and file sizes. citeturn457464search0turn457464search5
7. Support for Memory Cards up to 2TB
Current UGREEN product information advertises support for compatible memory cards with capacities up to 2TB. The card’s format and the host operating system must also support the intended capacity and file system. citeturn457464search0turn457464search5
8. Compact and Portable
Its compact form makes the CM387 convenient for a laptop bag, desk drawer, camera kit or travel setup. It can help reduce the number of separate accessories you need to carry.
9. Broad Device Compatibility
The CM387 is listed for use with compatible Windows, macOS, Android and Linux devices. Actual support depends on the device’s USB-C data capabilities, operating system and file-system compatibility. citeturn457464search3turn457464search5
10. Convenient File Management
Use the card slots to access, copy or organize photos, videos, documents and other files stored on supported memory cards. File operations depend on the connected device and its software.
Benefits of the UGREEN CM387 Card Reader
- Three-in-one adapter design
- Full-size SD and microSD/TF card slots
- Simultaneous access to both memory cards
- Additional USB-A 2.0 port
- USB-C host connection
- Advertised card-reader interface up to 5Gbps
- Support for compatible memory cards up to 2TB
- Suitable for photography and everyday file transfers
- Compatible with supported computers and mobile devices
- Compact and travel-friendly design
- Convenient connection for selected USB peripherals
Perfect For
The UGREEN CM387 is a useful accessory for:
- Photographers: Access files from compatible camera SD cards.
- Videographers: Transfer media from supported SD and microSD cards.
- Laptop users: Add memory card access to compatible USB-C laptops.
- Students: Transfer documents and files between supported devices.
- Content creators: Organize photos, videos and other media.
- Android users: Access supported memory cards on OTG-compatible smartphones.
- Office users: Connect memory cards and selected USB peripherals through one adapter.
Why Choose UGREEN CM387?
The UGREEN CM387 is designed for users who need more than a basic single-slot card reader. Its two memory card slots and additional USB-A port provide multiple connection options in one accessory.
For photographers, students and everyday computer users, this can make file access more convenient without carrying separate card readers and USB adapters. The key is to check your host device’s USB-C data support and the specifications of your memory cards before purchasing.
UGREEN CM387 vs. a Basic Card Reader
| Feature | UGREEN CM387 | Basic Single-Slot Reader |
|---|---|---|
| Full-Size SD Slot | Yes | Depends on model |
| microSD/TF Slot | Yes | Depends on model |
| Simultaneous Card Access | Yes, on compatible hosts | Depends on model |
| Additional USB-A Port | Yes | Usually unavailable |
| USB-C Host Connection | Yes | Depends on model |
| Advertised Card-Reader Interface | Up to 5Gbps | Varies |
| Card Capacity | Up to 2TB advertised | Varies |
| Portable Design | Yes | Usually |
| Peripheral Connectivity | USB-A 2.0 port | Depends on model |
Specifications and supported functions depend on the exact reader model and connected device. citeturn457464search0turn457464search3turn457464search5
How to Use the UGREEN CM387
Step 1: Check Your Device
Make sure your computer, tablet or smartphone supports USB-C data transfer. For mobile devices, confirm USB OTG and external-storage support where required.
Step 2: Connect the Reader
Insert the reader’s USB-C connector into a compatible USB-C port.
Step 3: Insert Your Memory Card
Insert a supported SD card or microSD/TF card into the corresponding slot.
Step 4: Access Your Files
Open your computer’s file manager or your mobile device’s supported file-management app to view the card contents.
Step 5: Connect a USB Peripheral
If needed, connect a compatible flash drive, mouse, keyboard or other supported peripheral to the USB-A port.
Step 6: Safely Eject Your Storage
Finish any file transfers and use your device’s safe-eject function where available before removing a memory card or USB storage device.
Recommended Use Cases
Camera Photo Transfers
Connect an SD card from a compatible camera to access and transfer photos on your computer.
microSD File Access
Read files from supported microSD/TF cards used in compatible devices.
Two-Card Workflows
Access files from SD and microSD cards at the same time when supported by the host system.
Laptop Port Expansion
Use the USB-A port to connect a compatible peripheral while the reader is connected to your USB-C device.
Everyday File Backup
Copy supported documents, images and videos between memory cards and compatible devices.
Important Usage Tips
- Confirm USB-C data or OTG support before purchasing.
- Do not assume that every USB-C smartphone supports external card readers.
- The USB-A port is USB 2.0, with a theoretical maximum of 480Mbps.
- The advertised 5Gbps interface rate is not a guaranteed memory-card transfer speed.
- Actual card performance depends on the memory card and host device.
- Mobile devices may require FAT32 or exFAT; NTFS support varies.
- Avoid removing cards while files are being transferred.
- Do not force a memory card into the wrong slot.
- Memory cards and connected USB peripherals are not included unless stated in the seller’s package details.
Product Specifications
| Specification | Details |
|---|---|
| Brand | UGREEN |
| Model | CM387 |
| Product Code / MPN | 80798 |
| Product Type | 3-in-1 USB-C Card Reader |
| Host Connection | USB-C male |
| Memory Card Slots | 1 × SD, 1 × microSD/TF |
| Additional Port | 1 × USB-A 2.0 |
| Card Access | Simultaneous SD and microSD access on compatible hosts |
| Advertised Card-Reader Interface | Up to 5Gbps |
| USB-A Transfer Rate | Up to 480Mbps theoretical |
| Supported Card Formats | SD, SDHC, SDXC, microSD/TF, microSDHC, microSDXC and other listed compatible formats |
| Advertised Maximum Card Capacity | Up to 2TB |
| Compatible Systems | Windows, macOS, Android and Linux; support varies by host |
| Dimensions | Approx. 50.1 × 50.1 × 11.5mm in listed specifications |
| Colour | Black or grey, depending on regional listing |
| Use | Memory card access, file transfers and compatible USB peripherals |
Specifications are based on UGREEN and retailer information. Confirm the supplied unit’s exact colour and packaging with the seller.
What’s in the Box?
Typical package contents include:
- 1 × UGREEN CM387 3-in-1 USB-C Card Reader
- 1 × User Manual or product documentation
Memory cards, computers, smartphones and USB peripherals are generally not included. Package contents may vary by seller. citeturn457464search9
Who Should Buy This Product?
Choose the UGREEN CM387 if you want:
- An SD and microSD card reader in one adapter
- Simultaneous access to two memory cards
- A USB-A port for compatible peripherals
- A compact accessory for a USB-C laptop or tablet
- Convenient access to camera and mobile storage
- A practical tool for everyday file management
If your device only has USB-A ports, you will need a compatible reader for that interface instead. If you need USB-A 3.0 peripheral speeds, note that the CM387’s additional USB-A port is USB 2.0.
Why Buy from AIYOZON?
When purchasing the UGREEN CM387 3-in-1 USB-C SD Card Reader from AIYOZON, you can enjoy a convenient shopping experience for practical computer accessories.
- Clear product specifications
- Convenient online ordering
- Product guidance before purchase
- Customer support
- Delivery options across Bangladesh
Frequently Asked Questions
What is the UGREEN CM387?
The UGREEN CM387 is a three-in-one USB-C adapter featuring an SD card slot, a microSD/TF card slot and an additional USB-A port. citeturn457464search3
Can it read SD and microSD cards simultaneously?
Yes. Both memory card slots support simultaneous access on compatible host devices. citeturn457464search0turn457464search3
What is the model or product code?
The model is CM387, and the associated product code is 80798. citeturn457464search3
How fast is the card reader?
The card-reader interface is advertised at up to 5Gbps. Actual transfer speed depends on the memory card, host port and file-transfer conditions.
How fast is the additional USB-A port?
The additional USB-A port uses USB 2.0, with a theoretical maximum data rate of 480Mbps. citeturn457464search3turn457464search9
Does it support 2TB memory cards?
UGREEN’s current product information advertises support for compatible memory cards up to 2TB. Check that your host device and file system also support the card. citeturn457464search0turn457464search5
Can I use it with an Android phone?
It can work with compatible Android devices that support USB OTG and external storage. Support varies by phone model and file system. citeturn457464search0turn457464search5
Can I use it with a USB-C laptop?
Yes, provided the laptop’s USB-C port supports data transfer and the operating system supports the connected storage devices. citeturn457464search0turn457464search3
Does it include an SD card or microSD card?
No. Memory cards are separate accessories unless the seller specifically includes them in a bundle.
Is the extra USB-A port USB 3.0?
No. The CM387’s additional USB-A port is USB 2.0, with a theoretical maximum transfer rate of 480Mbps. Do not confuse it with the card-reader interface’s advertised 5Gbps rate.
Final Verdict
The UGREEN CM387 3-in-1 USB-C SD Card Reader is a practical adapter for users who need access to SD and microSD cards while also connecting a compatible USB peripheral. Its dual-slot design, simultaneous card access, USB-C host connection and compact size make it useful for photography, content creation, office work and everyday file transfers.
For the best experience, check your device’s USB-C data support and remember that the extra USB-A port is USB 2.0, even though the card-reader interface is advertised at up to 5Gbps.
Simplify Your File Transfers
- 3-in-1 adapter: SD, microSD/TF and USB-A
- Dual card access on compatible hosts
- USB-C connection for supported devices
- Up to 5Gbps advertised card-reader interface
- USB-A 2.0 expansion port
- Up to 2TB advertised card capacity
- Compact and portable design
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