UGREEN USB 3.0 Micro SD Card Reader OTG Aluminum. The aluminum casing of the card reader accelerat...UGREEN USB 3.0 Micro SD Card Reader OTG Aluminum. The aluminum casing of the card reader accelerates heat dissipation and resists heat. Ejection Mechanism: The Micro SD slot has a lock and eject function to better secure the card. Intelligent Chip: The intelligent chip protects against short circuits, ensuring more stable transmission. Simultaneous Work: 2 cards work simultaneously, greatly improving the efficiency of transferring files and pictures. Premium Aluminum Alloy: Stylish, wear-resistant, and durable aluminum alloy is more suitable for traveling with family. Spring Loaded Mechanism: A card slot with lock and eject function allows you to easily remove the microSD card. Compatible Devices (INCOMPLETE LIST): SD Slot: SD, SDHC, SDXC, Extreme I III SD, Ultra II SD, MMC, RS-MMC. TF Slot: Micro SD, Micro SDHC, Micro SDXC. Compatible with Samsung Phones (Galaxy S22 Ultra/S22+/S22/S21/S20/S20 Plus/S20 Ultra/S10/S10 Plus/S10e/S9/S9 Plus/S8/S8 Plus/Note 10/Note 10+/Note 9/ Note 8/A70). Compatible with Samsung Tabs (Galaxy Tab S8/S8+/S8 Ultra/S7/S6, Galaxy Tab A8/A7). Compatible with Macbook (MacBook Pro 16”/15"/14"/13” 2021/2020/2019/2018/2017/2016 (M1/M2/M1 Pro/M1 Max), MacBook Air 13" 2022/2021/2020/2019/2018/2017/2016 (M1/M2), iMac, iMac Pro, and Mac Mini). Compatible with USB-C iPad (iPhone 15/15 Pro/Pro Max,iPad Mini 6 2021, iPad Pro 2021/2020/2018, iPad Air 4 2021/2020). Compatible with Surface (Surface, Surface Pro 7/7+/8/X, Surface Go 2/3, Surface Book, Surface Laptop, Surface Laptop Go, Surface Laptop Studio). Compatible with Lenovo PC (ThinkPad/ Thinkbook/Yoga/IdeaPad). Other Brand Tablets. Other Brand Laptops (Google Pixelbook, Dell/ASUS/Acer/HP Chromebooks. Dell XPS/Inspiron/G Series, Alienware m17/x17/m15/x15. ASUS Zenbook Pro/Zenbook S/Flip/Fold/Vivobook/ProArt Studiobook. Acer ENDURO Urban/Swift/Aspire/Nitro). Other Brand Phones (Google Pixel 6 Pro/2XL, Oneplus 8/8Pro, Microsoft Liuma 950XL). Notice 1. USB A and USB C plug can NOT be used identically. Notice 2. When connecting to a mobile device, please kindly make sure that your USB C phone/tablet supports OTG function. Notice 3. For Samsung phones, the memory card file format should be FAT32/EXFAT, NTFS is not supported. Notice 4. Support phone case within 1mm/0.04inch.
This UGREEN USB 3.0 Micro SD Card Reader is designed for users who need fast and reliable access to their SD and Micro SD cards on the go. Its key benefit is the dual USB-A and USB-C connectors and simultaneous card reading, greatly improving file transfer efficiency. A caveat to note is that it requires the connected mobile device to support OTG functionality.
All features
Model Part Number
3.0
Brand
UGREEN
Extended Product Information
FAQs
Can I use both the USB-A and USB-C connectors at the same time?
No, the USB-A and USB-C connectors cannot be used simultaneously for data transfer. You can only use one at a time.
Does this card reader work with my iPhone 14?
This card reader is designed with USB-C connectors and works with devices like the iPhone 15 series. For iPhone 14 and earlier models which use Lightning, you would need a different adapter or card reader.
What is the maximum capacity of SD card this reader supports?
The reader supports standard SD, SDHC, and SDXC card formats. While not explicitly stated, it typically supports cards up to 2TB, which is the current standard for SDXC.
Why does my Samsung phone not recognize the card?
Ensure your Samsung phone supports OTG. Also, check the memory card's file system format; for Samsung phones, it must be FAT32 or EXFAT. NTFS is not supported.
How do I protect the connectors when not in use?
The card reader comes with protective caps for both the USB-A and USB-C connectors. It is recommended to use these caps for storage to prevent dust and damage.
Is this card reader compatible with my new M2 MacBook Air?
Yes, this card reader is compatible with M2 MacBook Air models (and other M1/M2 MacBooks) as it features a USB-C connector that plugs directly into the MacBook Air's ports.
Can I use this reader to expand my tablet's storage?
Yes, if your tablet supports USB OTG functionality, you can use this card reader to access and transfer files to and from SD or Micro SD cards, effectively expanding its storage capabilities.
Troubleshooting
Card reader is not recognized by the computer or mobile device.
Ensure the card reader is fully plugged into the USB-A or USB-C port. Try a different USB port. If using a mobile device, confirm it supports OTG functionality and that the card is formatted correctly (FAT32/EXFAT for Samsung). Restart your device.
Cannot read or write data to the memory card.
Verify the memory card is inserted correctly. Check if the card is corrupted or damaged. Try formatting the card (ensure backup of data first). For Samsung phones, confirm the card is formatted as FAT32/EXFAT, not NTFS.
Slow data transfer speeds.
Ensure you are using a USB 3.0 port on your host device. Check the speed rating of your memory card; a faster card will yield faster transfer speeds. Close unnecessary applications running in the background on your computer.
Micro SD card is difficult to remove.
Gently push the Micro SD card further into the slot until you feel a click, then it should eject. If still stuck, avoid forcing it; try wiggling it slightly while applying gentle outward pressure. Ensure the card is correctly oriented before insertion.
Reader gets warm during use.
Some warmth is normal, especially during prolonged high-speed transfers, due to the aluminum casing's heat dissipation. If it becomes excessively hot, stop use and disconnect. Ensure there are no obstructions around the reader.
Pros and Cons
Pros
High-speed data transfer with USB 3.0 interface.
Simultaneous access to both SD and Micro SD cards.
Durable and heat-dissipating aluminum alloy construction.
Versatile connectivity with both USB-A and USB-C plugs.
Protective caps for enhanced portability and durability.
Cons
Requires OTG support on mobile devices for smartphone/tablet use.
NTFS format is not supported for Samsung phones.
Phone cases thicker than 1mm may cause compatibility issues.
USB-A and USB-C plugs cannot be used simultaneously for data transfer.
Setup, Compatibility & Care
Setup:
This card reader is designed for plug-and-play functionality. Simply insert your SD or Micro SD card into the appropriate slot and connect the reader to your device's USB-A or USB-C port. No drivers or software installation are typically required for most modern operating systems (Windows, macOS, Linux, Android).
Devices: Compatible with computers (MacBook, iMac, Windows laptops/desktops, Chromebooks, etc.) and mobile devices (Samsung phones/tablets, USB-C iPads, Surface devices, etc.) that support USB OTG.
Note for Samsung Phones: Ensure memory card files are formatted as FAT32/EXFAT. NTFS is not supported.
Note for Mobile Use: Your phone or tablet *must* support USB OTG functionality for the reader to work with it.
Note on Connectors: The USB-A and USB-C plugs cannot be used at the same time for data transfer.
Note on Phone Cases: The reader may not fully insert if your phone case is thicker than 1mm.
Care:
Keep the reader dry and away from extreme temperatures.
Use the included protective caps to cover the USB-A and USB-C connectors when not in use to prevent dust and damage.
Gently insert and remove memory cards to avoid damaging the slots.
To clean the aluminum casing, use a dry, soft cloth. Avoid abrasive cleaners.