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UGREEN has built a solid reputation in the digital accessories market for delivering reliable, functional hardware without unnecessary complexity. In the memory card reader category, the brand focuses on straightforward plug-and-play operation, durable aluminum and zinc enclosures, and broad compatibility across mobile platforms, desktop operating systems, and dedicated camera setups. Whether you are offloading footage from an action camera, reviewing trail camera clips in the field, or backing up high-resolution RAW stills from a professional mirrorless body, UGREEN provides dedicated hardware options designed around specific physical interfaces and memory standards.
While all six adapters share core data-integrity features and driver-free connectivity, they diverge sharply when it comes to bus interface bandwidth, physical connector styles, and card slot configurations to suit different creative workflows.
1 UGREEN USB C SD Card Reader for Everyday Multi-Device Offloading
9.0/10UGREEN USB C SD Card Reader
Best for: Field photographers wanting fast dual-port ingest
Pros
- Fast 312MB/s UHS-II transfer rate
- Dual USB-A and USB-C connectivity
- Spring eject mechanism secures cards
Cons
- Stick body can crowd tight ports
Best for: Drone and action camera minimalists
Pros
- Ultra-compact keychain loop design
- Rugged zinc alloy heat dissipation
- Snug dedicated microSD slot
Cons
- Single slot lacks full-size SD support
Best for: Archivists handling varied legacy card formats
Pros
- Reads 4 cards simultaneously
- Supports CompactFlash and Memory Stick
- Extended cable prevents desk clutter
Cons
- Bulkier housing than travel sticks

Best for: High-resolution photographers and videographers
Pros
- Blazing fast 312MB/s UHS-II transfers
- Both slots support UHS-II media
- Sturdy aluminum body with braided cable
Cons
- Higher performance demands compatible cards

Best for: Everyday creators needing port clearance
Pros
- Braided nylon cable preserves ports
- Simultaneous dual card access
- Durable aluminum heat dissipation
Cons
- Caps out at UHS-I speeds
The UGREEN USB C SD Card Reader is engineered as a dependable workhorse adapter for mobile devices, laptops, and tablets. Built with an integrated short braided nylon cable attached to a gray aluminum housing, this unit addresses a frequent frustration with rigid dongles: port blocking. By placing the card slots at the end of a flexible lead, it leaves adjacent Thunderbolt and USB ports completely accessible on tightly spaced laptops such as the MacBook Pro or Dell XPS. The aluminum housing is designed to aid passive heat dissipation during sustained transfers, maintaining stable bidirectional data transmission over long sessions.
Internally, the adapter operates over a 5Gbps USB 3.0 interface and supports cards up to 2TB in capacity. It features dual slots accommodating both standard SD formats (SD, SDHC, SDXC, MMC) and microSD formats (TF, Micro SDHC, Micro SDXC). A major operational advantage is its ability to read and write to both memory card slots at the same time. This dual-read capability eliminates the constant swapping of media when you need to duplicate files directly between your drone’s microSD card and a primary camera’s full-size SD card. It operates completely driver-free across Windows, macOS, Linux, Chrome OS, and mobile operating systems, making it a reliable pairing alongside a u green usb c hub when managing multiple peripherals.
This model is the ideal choice for everyday content creators, outdoor enthusiasts checking trail cameras or dash cams on an iPad or iPhone, and students who need reliable dual-slot access. However, for photographers working with high-bitrate video who require UHS-II transfer speeds beyond standard UHS-I boundaries, this model gives way to UGREEN dedicated SD 4.0 alternatives.
Listing details (21 fields)
| Media Type | SD Card, microSD |
|---|---|
| Connectivity Technology | USB Type C, USB Type C USB |
| Additional Features | Plug & Play, Temperature Proof |
| Compatible Devices | Desktop, Laptop, Smartphone, Tablet |
| Data Transfer Rate | 5 gigabits_per_second |
| Hardware Interface | USB 3.0 Type C |
| Slot Count | 2 |
| Operating System | Android, Chrome OS, Linux, Mac OS, Windows |
| Color | Gray |
| Item Dimensions L x W x H | 2.21"L x 0.43"W x 1.34"H |
| Item Highlight | for TF SD Micro SD SDXC SDHC, USB SD Card Reader Type C Compatible with iPhone 18/17 Samsung Galaxy, Macbook, iPad |
| Brand | UGREEN |
| Model Name | sd card reader |
| Number of Items | 1 |
| Manufacturer | UGREEN GROUP LIMITED |
| Item Weight | 20 g |
| Model Number | 80888 |
| Mfr Part Number | 80888 |
| Best Sellers Rank | #74 in Computer Memory Card Readers |
| ASIN | B08CS8T8DC |
| Special Feature | Plug & Play, Temperature Proof |
Copied from the Amazon product page, not measured here.
2 UGREEN SD Card Reader USB C for Dual USB-A and USB-C Flexibility
9.2/10The UGREEN SD Card Reader USB C eliminates the need for trailing cables by integrating both a USB Type-C plug and a standard USB Type-A connector into a single deep gray stick form factor. Measuring 2.9 inches long and under an inch wide, it slips directly into a camera bag pouch or pocket. The dual-plug configuration makes it an effective bridge between modern USB-C mobile devices and older desktop towers or office workstations that feature only legacy USB-A ports.
Performance remains strong with SuperSpeed USB 3.0 throughput delivering up to 5Gbps. The reader houses dedicated SD and microSD slots that function simultaneously, allowing swift copying between two cards or direct offloading to your computer drive. It supports a broad array of legacy and modern formats, including SDXC, SDHC, SD, MMC, RS-MMC, and microSDXC cards up to standard commercial capacities. Because it draws power directly from the host bus and requires zero driver configuration, you can plug it into an Android tablet, an iPhone, or a PC desktop and begin managing files immediately.
Shooters who split their computing time between a contemporary USB-C laptop in the field and a USB-A desktop at home will find this dual-connector stick exceptionally convenient. If your workstation setup features recessed USB ports where a rigid thumb drive might interfere with adjacent cables, a tethered cable reader represents a more forgiving physical design.
Listing details (23 fields)
| Media Type | SD Card, SDHC, SDXC, microSD, microSDXC |
|---|---|
| Connectivity Technology | USB Type C |
| Additional Features | Plug & Play |
| Compatible Devices | Camera, Laptop, Personal Computer, Smartphone, Tablet |
| Data Transfer Rate | 5 gigabits_per_second |
| Hardware Interface | USB 3.0, USB Type C |
| Slot Count | 2 |
| Operating System | Android, Chrome OS, Linux, Mac OS, Windows |
| Color | Deep Gray |
| Item Dimensions L x W x H | 2.9"L x 0.85"W x 0.46"H |
| Item Highlight | 2 in 1 Memory Card Reader for MicroSD SDHC SDXC Compatible with PC Computer MacBook Laptop iPad iPhone 17 16 15 Pro/Pro Max |
| Brand | UGREEN |
| Model Name | card reader |
| Number of Items | 1 |
| Unit Count | 1 Count |
| Manufacturer | Ugreen Group Limited |
| Item Weight | 37 g |
| Model Number | 50706 |
| Mfr Part Number | 50706 |
| Warranty Description | 24 Months Warranty Service by UGREEN |
| Best Sellers Rank | #6 in Computer Memory Card Readers |
| ASIN | B07D1J88CF |
| Special Feature | Plug & Play |
Copied from the Amazon product page, not measured here.
3 UGREEN USB C SD 4.0 Card for High-Speed UHS-II Workflows
9.6/10Top score 9.6/10, scored 9.4/10 or higher
Ugreen
Our score: 9.6/10 Overwhelmingly positive
When high-resolution photography and multi-gigabyte video files make standard transfer rates feel sluggish, the UGREEN USB C SD 4.0 Card provides the necessary performance step-up. Outfitted with an advanced controller and hardware pins configured for the SD 4.0 UHS-II standard, this reader reaches file transfer rates of up to 312MB/s. That is roughly three times faster than typical UHS-I card readers, significantly cutting the time spent waiting for massive 4K video shoots, continuous RAW bursts, or vlogging libraries to copy over.
UGREEN equips this adapter with both a UHS-II SD slot and a UHS-II TF slot, ensuring that both full-size cards and micro-sized media can take full advantage of elevated bus speeds. It supports simultaneous reading and writing across both slots, allowing direct card-to-card synchronization and file organization without intermediate caching on your primary drive. Constructed with a deep gray aluminum alloy shell and a rugged braided cable, the physical build is specifically tailored to withstand repeated drops and jostling in gear bags. The short cable lead ensures neighboring ports remain unobstructed on compact tablets and laptops.
Professional photographers, commercial videographers, and power users who actively purchase UHS-II memory cards will benefit most from this reader. If you shoot exclusively on entry-level UHS-I memory cards, the extra bandwidth will remain dormant, making standard 5Gbps models a more sensible baseline.
Listing details (6 fields)
| Color | Deep Gray |
|---|---|
| Size | small |
| Dimensions | 2.2047244072 x 1.3385826758 x 0.4330708657 inches |
| Weight | 0.0220462262 pounds |
| Product Group | Personal Computer |
| Binding | Electronics |
Copied from the Amazon product page, not measured here.
4 UGREEN USB C SD Card Reader for Legacy Media and Multi-Slot Archiving
8.6/10The UGREEN USB C SD Card Reader in its 4-in-1 configuration is built for media creators and technicians who manage varied card formats beyond standard SD cards. This external adapter features dedicated slots for SD, microSD, CompactFlash (CF), and Memory Stick (MS) media. By retaining legacy slots like CF and MS alongside modern formats, it acts as a universal ingestion hub for older digital SLR cameras, legacy camcorders, hunting cameras, and modern smartphones alike.
Despite managing four distinct slots, the unit supports simultaneous 4-card access. You can mount all four connected media formats at the exact same moment on Windows, macOS, Linux, or Chrome OS without driver installation. File transfers travel over a 5Gbps USB-C connection, providing ample bandwidth to quickly move full gigabytes of photos and video footage. An extended built-in cable keeps the multi-slot hub flat on your desk or shooting station, preventing bulky card bodies from applying strain to your host computer’s USB-C port.
This 4-in-1 unit is tailored specifically for archivists, studio photographers holding onto older professional CF cameras, and enthusiasts who manage mixed camera setups. Users who only need to read single micro-format cards may prefer an ultra-streamlined anker micro sd card reader or a dedicated thumb stick to avoid carrying unnecessary bulk.
Listing details (5 fields)
| Color | Black |
|---|---|
| Size | USB C |
| Dimensions | 2.676771650813 x 2.164960627713 x 0.5905511805 Inches |
| Product Group | Electronics |
| Binding | Personal Computers |
Copied from the Amazon product page, not measured here.
5 UGREEN USB C Micro SD Card for Ultra-Compact Keychain Portability
9.6/10Top score 9.6/10, scored 9.4/10 or higher
Ugreen
Our score: 9.6/10 Overwhelmingly positive
The UGREEN USB C Micro SD Card focuses entirely on minimal physical volume and dedicated microSD handling. Designed with a thumb-sized footprint and an integrated keychain hole, this adapter is meant to live permanently attached to a key ring, backpack zip, or camera strap. It features a single direct-insertion slot for microSD and TF cards, making it an ideal companion for drone operators, action camera users, and mobile videographers who rarely handle full-sized SD cards.
The body is crafted from premium zinc alloy rather than plastic or standard aluminum. Zinc alloy provides high structural rigidity against accidental crush damage in your pocket, while naturally drawing thermal energy away from the internal processing chip. Because the metal shell acts as an external heatsink, it will feel noticeably warm to the touch during sustained transfers—a normal condition indicating that the internal controller is effectively dumping heat to prolong hardware life. Running over a 5Gbps USB-C hardware bus, it operates at UHS-I data transfer rates up to 104MB/s, delivering swift mobile offloading to iPad Pro, Samsung Galaxy, and USB-C iPhone models.
This minimalist adapter is the definitive choice for minimalist commuters, mobile phone creators, and drone pilots who travel light and need immediate access to micro-format cards. If you shoot on digital cameras requiring full-size SD or CompactFlash cards, or if you plan to carry multiple charging setups evaluated in our ugreen travel adapter reviews, this single-slot reader will need to be supplemented by a multi-slot model.
Listing details (5 fields)
| Color | Silver |
|---|---|
| Dimensions | 3.8 x 2.6 x 0.55 Inches |
| Weight | 0.0440924524 pounds |
| Product Group | Personal Computer |
| Binding | Unknown Binding |
Copied from the Amazon product page, not measured here.
6 UGREEN USB C SD 4.0 Card for Dual-Port High-Speed Field Capture
8.2/10The UGREEN USB C SD 4.0 Card combines top-tier UHS-II transfer capabilities with the versatile physical connectivity of a dual-connector stick. Built in a clean black enclosure, this model incorporates both a standard USB-A connector and a USB-C plug. This dual-interface layout allows photographers to ingest high-bitrate cards directly into an iPad or modern USB-C laptop, or plug into older studio workstations without rummaging for separate host dongles.
Internally, this model features dual slots supporting SDXC, SDHC, microSD, MMC, RS-MMC, and microSDXC media up to 2TB in capacity. When paired with high-performance SD 4.0 UHS-II media, the reader reaches sequential read and write speeds up to 312MB/s. A notable physical design detail is the integrated eject mechanism, which firmly seats and secures cards within the reader slots, preventing accidental disconnects or bent pins when working in moving vehicles or crowded media rooms. It is fully plug-and-play across macOS, Windows, iOS, and Android systems equipped with USB OTG functionality.
High-end event photographers, mobile journalists, and field editors who need both UHS-II transfer speeds and direct compatibility across USB-A and USB-C equipment will find this stick adapter singularly suited to their gear bags. Where it gives way is in multi-port laptop docks, where its rigid stick body might crowd adjacent ports, requiring a tethered cable design instead.
Listing details (6 fields)
| Color | Black |
|---|---|
| Size | small |
| Dimensions | 2.8740157451 x 0.8661417314 x 0.4724409444 inches |
| Weight | 0.1322773572 pounds |
| Product Group | Personal Computer |
| Binding | Tools & Home Improvement |
Copied from the Amazon product page, not measured here.
How to Choose the Right UGREEN SD Card Reader
Selecting the right adapter from UGREEN’s memory card lineup requires matching your media formats, required read speeds, and physical port arrangements. While every model provides reliable plug-and-play operation and wide cross-platform support, picking the wrong combination of bus speeds or physical enclosures can cause workflow bottlenecks.
Start by identifying your primary memory card types. If your gear utilizes only microSD cards—common in drones, action cameras, dash cams, and handheld gaming devices—a dedicated compact adapter like the UGREEN USB C Micro SD Card saves significant space and eliminates the need to carry full-size SD housings. Conversely, if you operate older professional DSLRs alongside modern action cams, the 4-in-1 external reader provides dedicated CompactFlash and Memory Stick slots alongside SD and microSD, preventing the need for multiple dongles.
Evaluate your transfer speed requirements based on your capture format. Everyday photographers shooting compressed JPEGs or 1080p video on UHS-I memory cards are well served by standard 5Gbps models like the UGREEN USB C SD Card Reader or the dual-interface stick. However, if you shoot uncompressed RAW bursts or high-bitrate 4K and 6K video on modern UHS-II cards, investing in a reader equipped with SD 4.0 pins—such as the tethered UHS-II reader or the dual-port SD 4.0 stick—is critical. These models push speeds up to 312MB/s, cutting ingest times to roughly a third of standard UHS-I readers.
Finally, examine the physical clearance around your computer ports. Direct plug-in stick readers offer supreme portability and eliminate cable clutter, but their rigid bodies can block neighboring ports on slim laptops or recessed computer chassis. If your laptop features closely spaced USB-C ports, choosing a model with an integrated braided cable ensures your neighboring power and video connections remain completely unobstructed.
FAQ
Can these UGREEN card readers read two memory cards at the same time?
Most dual-slot and multi-slot UGREEN card readers support simultaneous read and write functions across their memory slots. For example, the standard USB C SD Card Reader (B08CS8T8DC), the dual-port stick (B07D1J88CF), the tethered UHS-II reader (B0BNBXVLZS), and the 4-in-1 multi-card adapter (B0BMVHC1N9) all allow you to access multiple inserted cards concurrently. This lets you transfer files directly from one card to another without copying them to your computer drive first. The keychain micro SD reader (B08131PLHZ) has only one slot and cannot support dual-card transfers.
Do I need to install drivers to use a UGREEN USB-C SD card reader on Mac or mobile devices?
No external drivers, companion applications, or secondary power supplies are required for any of these UGREEN card readers. They operate on native operating system drivers built into macOS, Windows, Linux, Chrome OS, Android, and iOS/iPadOS. You simply insert your card into the reader, connect the USB-C plug to your host device, and your operating system will mount the memory volume automatically inside your file management tool.
Will a UHS-II SD card reader work with regular UHS-I memory cards?
Yes. UGREEN UHS-II SD 4.0 card readers are fully backward compatible with standard UHS-I memory cards, as well as legacy SD and microSD media. When you insert a UHS-I card into a UHS-II slot, the reader simply negotiates the connection at standard UHS-I speeds, up to the card’s maximum rating (typically around 104MB/s). You will not damage your media, though you will only achieve the 312MB/s transfer ceiling when using cards that feature the physical second row of UHS-II connection pins.
Why does the zinc alloy micro SD card adapter get warm during file transfers?
The compact zinc alloy micro SD adapter is designed to use its metallic exterior as a passive heatsink. High-speed data processing generates thermal energy, and the dense zinc alloy casing rapidly pulls that heat away from the internal controller chip to protect against internal overheating and prolong product longevity. Because heat is efficiently conducted outward, the exterior shell will naturally feel warm to the touch during large file transfers.
Do UGREEN card readers work with iPhones and Android smartphones directly?
Yes, provided your smartphone features a USB Type-C port and supports USB On-The-Go (OTG) functionality. Modern iPhone models (iPhone 15, 16, and 17 series) and Android devices running recent versions of Android feature native USB-C OTG support. You can plug the reader directly into your phone’s charging port, open the native Files app on iOS or the default file manager on Android, and immediately browse, copy, or stream media directly from your camera memory cards.