Brand | SmartQ |
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Series | C307 |
Item model number | C307 |
Operating System | Ubuntu, Fedora, Debian, macOS Catalina, Big Sur, Monterey, Ventura, Windows 7, 8, 10, 11 |
Item Weight | 0.32 ounces |
Product Dimensions | 2.77 x 0.75 x 0.51 inches |
Item Dimensions LxWxH | 2.77 x 0.75 x 0.51 inches |
Color | black |
Manufacturer | SmartQ Inc. |
ASIN | B06ZYXR7DL |
Country of Origin | Taiwan |
Is Discontinued By Manufacturer | No |
Date First Available | April 13, 2017 |

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SmartQ C307 USB 3.0 Portable Card Reader for SD, SDHC, SDXC, MicroSD, MicroSDHC, MicroSDXC, with Advanced All-in-One Design
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Purchase options and add-ons
Brand | SmartQ |
Media Type | microSDHC, microSD, SDHC, SDXC, SD Card |
Connectivity Technology | USB Type A |
Special Feature | Plug & Play |
Color | black |
About this item
- 2-in-1 Multifunctional Design: This SuperSpeed 2-Slot USB 3.0 Flash Memory Card Reader features a 2-in-1 design, supporting both SD cards and Micro SD cards. It’s a versatile card reader that can handle two major types of storage cards, including SDXC and MicroSDXC, making it ideal for use with GoPro and drones.
- Wide Card Compatibility: This card reader is compatible with a variety of storage card types, including SDXC and MicroSDXC, which work for GoPro and drones, as well as SDHC, MMC, RS-MMC, Micro SD, Micro SDHC, and UHS-I cards. It caters to various storage needs and formats.
- High-Speed USB 3.0 Interface: Equipped with a USB 3.0 interface, it ensures high-speed data transfer, allowing you to quickly read and write files on your storage cards. It's perfect for transferring files from Android devices using USB and MicroSD.
- Portable Design: Its compact and portable design, complete with an attached cap, allows you to carry this all-in-one USB memory card reader with you wherever you go. It’s especially suitable for travel or mobile office use, providing convenient data management on the fly.
- Easy to Use: This card reader is user-friendly. Simply insert the appropriate storage card, connect it to your computer, Mini USB for Windows, or other devices, and you can immediately access and transfer data without any complicated setup processes.
Additional Details


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This Item ![]() SmartQ C307 USB 3.0 Portable Card Reader for SD, SDHC, SDXC, MicroSD, MicroSDHC, MicroSDXC, with Advanced All-in-One Design | Recommendations | |||||
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Price | -15% $6.79$6.79 Typical: $7.99 | -29% $4.99$4.99 Typical: $6.99 | $11.99$11.99 | -50% $4.99$4.99 List: $9.99 | $4.99$4.99 | $6.97$6.97 |
Delivery | Get it as soon as Saturday, May 17 | Get it as soon as Saturday, May 17 | Get it as soon as Saturday, May 17 | Get it as soon as Saturday, May 17 | Get it as soon as Saturday, May 17 | Get it as soon as Saturday, May 17 |
Customer Ratings | ||||||
Sold By | SmartQ Inc. | SmartQ Inc. | YooYee | WansursDirect | Jahovans X Direct | VizGiz US Direct |
hardware interface | usb3.0 | usb2.0, usb c | media card, usb3.0, microsd, micro sdxc, micro sdhc, multimedia card | usb3.0, sdhc, sdxc, sduc, microsd, micro sdhc, micro sdxc | usb3.0 | usb2.0 |
data transfer rate | 5 gigabits per second | 5 gigabits per second | 5 gigabits per second | 5 gigabits per second | 5 gigabits per second | 480 megabits per second |
operating system | Windows 7, 8, 10, 11, macOS Catalina, Big Sur, Monterey, Ventura, Ubuntu, Fedora, Debian | Windows, macOS, Linux, Android, iOS | Linux,Windows | Windows, MacOS, Android, Linux, iOS | Linux, Chrome OS, Windows | Android, Mac OS, Windows |
media type | SD Card, SDHC, SDXC, microSD, microSDHC | SD Card, SDHC, SDXC, microSD, microSDXC | RS-MMC, UHS-1, microSDXC, SD Card, microSD, SDXC, microSDHC, MMC, SDHC | microSD, SD Card, microSDHC, microSDXC, SDHC | microSD, SD Card, MMC, SDHC, SDXC | SD Card, microSD, SDXC |
From the brand

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Since 2016, we've dedicated ourselves to enhancing your lifestyle with convenience and peace of mind. Specializing in cutting-edge consumer electronics accessories, our products are trusted across various industries. From high-definition audio and video accessories to hubs, data storage, mobile storage, gaming peripherals, and dash cams, we ensure your devices receive reliable power for a limitless technology experience.
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USB 3.0 SD Card Readers
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USB C
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USB A 3.0 HUB
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Product Description
SmartQ USB 3.0 SD / microsd Card Reader



SmartQ Card reader comparison
![]() USB 3.0 Card Reader
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| ![]() 2-IN-1 SD Card Reader
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| ![]() SD Card Reader for iPhone | ![]() USB C card Reader
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| ![]() sd card reader usb c | ![]() micro sd card reader
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| ![]() micro sd reader | |
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Customer Reviews
|
4.6 out of 5 stars 34,833
|
4.5 out of 5 stars 470
|
4.4 out of 5 stars 5,821
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4.5 out of 5 stars 5,145
|
4.4 out of 5 stars 5,821
|
4.6 out of 5 stars 34,833
|
4.4 out of 5 stars 5,821
|
Price
| $14.99$14.99 | $6.99$6.99 | — | $12.99$12.99 | — | $9.99$9.99 | — |
USB Type
| USB C | USB C & USB 3.0 | Lightning & USB C | USB C | USB C & USB 3.0 | USB 3.0 | USB C & USB 3.0 |
Card Slot
| SD / CF / Micro SD / MS card | SD / Micro SD | SD / Micro SD | Micro SD | SD / Micro SD | SD / CF / Micro SD / MS card | SD / Micro SD |
Transfer Rate
| 5Gbps / UHS-I | 5Gbps / UHS-I | 5Gbps / UHS-I | 5Gbps / UHS-I | 5Gbps / UHS-I | 5Gbps / UHS-I | 5Gbps / UHS-I |
Dimensions
| 2.78x1.67x0.59 inch | 2.5x0.65x0.35inch | 25.4x0.65x0.35 inch | 1.35 x 0.87 x 0.3 inch | 3.36x2.28x0.37inch | 2.78x1.67x0.59 inch | 25.4x0.65x0.35 inch |
Material
| Polycarbonate | Polycarbonate | Aluminum & Polycarbonate | Zinc Alloy | Aluminum & Polycarbonate | Polycarbonate | Aluminum & Polycarbonate |
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Product information
Technical Details
Additional Information
Customer Reviews |
4.6 out of 5 stars |
---|---|
Best Sellers Rank | #69 in Computer Memory Card Readers |
Warranty & Support
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SmartQ C307 USB 3.0 Portable Card Reader for SD, SDHC, SDXC, MicroSD, MicroSDHC, MicroSDXC, with Advanced All-in-One Design
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the card reader works seamlessly with laptops and appreciate its fast data transfer speeds, with write speeds reaching up to 60mb/s. Moreover, the device is easy to use with plug-and-play functionality, has a compact size that makes it portable, and effectively reads SD and microSD cards. Additionally, customers consider it good value for money, noting it saves time. However, the build quality receives mixed feedback, with some praising its solid construction while others report it breaking after 6 months of use.
AI-generated from the text of customer reviews
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Customers find that the card reader works excellently, with one customer noting it functions seamlessly with their laptop.
"...Value for Money Considering its robust performance, wide compatibility, and ease of use, the SmartQ C307 USB 3.0 Portable offers..." Read more
"...-and-play, so no drivers or software are needed, and it works seamlessly with my laptop...." Read more
"...with a wide range of cards (SD, microSD, and more) makes it versatile...." Read more
"It works very well, flash gets mounted very quickly...." Read more
Customers find the card reader good value for money, noting it saves time and is particularly suitable for those on a budget.
"...Its affordable price point makes it accessible for a broad range of users, from professionals to casual users. Conclusion..." Read more
"...Overall, it’s a reliable, fast, and affordable card reader that’s perfect for anyone who frequently works with different memory cards." Read more
"...Easy to use, easy to store. And the price was really good" Read more
"...Making me have to start entirely from scratch and wasting my time. I highly UNrecommend this product." Read more
Customers find the card reader easy to use, describing it as a plug-and-play device that requires no fuss.
"...This versatility makes it a convenient tool for photographers, videographers, and anyone who frequently works with different types of memory..." Read more
"...It’s plug-and-play, so no drivers or software are needed, and it works seamlessly with my laptop...." Read more
"...Highly convenient!" Read more
"...Easy to use, easy to store. And the price was really good" Read more
Customers praise the card reader's performance, noting its fast data transfer speeds and write speeds of up to 60mb/s.
"...Equipped with USB 3.0 technology, the SmartQ C307 offers fast data transfer speeds, making it ideal for quickly transferring large files like photos..." Read more
"...The USB 3.0 connection ensures fast transfer speeds, even with large files, and I’ve noticed a huge improvement in how quickly I can move data..." Read more
"...C307 USB 3.0 portable card reader is a must-have for anyone needing quick and efficient data transfers...." Read more
"It works very well, flash gets mounted very quickly...." Read more
Customers appreciate the card reader's compact size and portability, with one customer noting its slim design that makes it easy to store anywhere.
"...Design and Build Quality The SmartQ C307 boasts a sleek, compact design that makes it extremely portable and easy to carry around...." Read more
"...Despite its small size, it handles multiple card types, including SD, SDHC, SDXC, MicroSD, and more, making it versatile for any kind of media..." Read more
"...Compact and lightweight, it’s perfect for day-to-day travel and fits easily into any bag or pocket. Highly convenient!" Read more
"...The compact size makes it perfect for travel, and the price is very reasonable for the convenience it provides...." Read more
Customers report that the card reader successfully reads SD cards, with one customer noting it works with multiple card formats.
"...Its fast data transfer speeds, wide compatibility, and user-friendly design make it an excellent choice for anyone in need of a portable and..." Read more
"...The all-in-one design is convenient, as it allows me to switch between cards without constantly plugging and unplugging different devices...." Read more
"...It’s incredibly easy to use—simply insert your SD card, plug the adapter into your computer’s USB port, and you’re ready to transfer files...." Read more
"Great for reading the and sd cards and very portable" Read more
Customers appreciate the USB port of this card reader, with multiple customers noting its compatibility with 3D printers, and one mentioning that both SD and MicroSD ports work great.
"...The device is backward compatible with USB 2.0, ensuring it can be used with older computers and devices without any issues...." Read more
"...The wide range of supported memory card formats and USB 3.0 connectivity are significant advantages for those working with various devices and media..." Read more
"...The little USB c adapter's been pretty nice too. Finally have a use for this port on my laptop, especially when the other USB slots are occupied" Read more
"...The sliding mechanism is poorly done, and may expose the usb-A port to damage...." Read more
Customers have mixed opinions about the card reader's quality, with some finding it solid and reliable, while others report that it is not well-made and broke after 6 months of use.
"...In summary, the SmartQ C307 USB 3.0 Portable is a reliable and efficient card reader that delivers on all fronts...." Read more
"...The plastic housing felt somewhat flimsy, and I was concerned that it might not withstand rough handling or repeated use over time...." Read more
"...Overall, it’s a reliable, fast, and affordable card reader that’s perfect for anyone who frequently works with different memory cards." Read more
"...Its high-quality build ensures durability, while its compatibility with a wide range of cards (SD, microSD, and more) makes it versatile...." Read more
Reviews with images

Simple, easy to use card reader
Top reviews from the United States
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- Reviewed in the United States on August 8, 2024Size: SingleVerified PurchaseThe SmartQ C307 USB 3.0 Portable is a highly functional and efficient device that stands out in the realm of portable card readers. Here’s an in-depth review:
Design and Build Quality
The SmartQ C307 boasts a sleek, compact design that makes it extremely portable and easy to carry around. Its sturdy construction ensures durability, so it can withstand regular use and travel. The matte finish not only enhances its aesthetic appeal but also prevents fingerprints and smudges.
Performance
Equipped with USB 3.0 technology, the SmartQ C307 offers fast data transfer speeds, making it ideal for quickly transferring large files like photos, videos, and documents. The device is backward compatible with USB 2.0, ensuring it can be used with older computers and devices without any issues.
Compatibility
This portable card reader is compatible with a wide range of memory card formats, including SD, microSD, SDHC, SDXC, and more. This versatility makes it a convenient tool for photographers, videographers, and anyone who frequently works with different types of memory cards.
Ease of Use
The SmartQ C307 is a plug-and-play device, meaning no additional software or drivers are needed. Simply connect it to your computer’s USB port, insert your memory card, and you’re ready to go. The LED indicator light provides a clear indication of the device’s status, ensuring you know when your files are being transferred.
Value for Money
Considering its robust performance, wide compatibility, and ease of use, the SmartQ C307 USB 3.0 Portable offers excellent value for money. Its affordable price point makes it accessible for a broad range of users, from professionals to casual users.
Conclusion
In summary, the SmartQ C307 USB 3.0 Portable is a reliable and efficient card reader that delivers on all fronts. Its fast data transfer speeds, wide compatibility, and user-friendly design make it an excellent choice for anyone in need of a portable and versatile card reader. Whether you’re a professional needing to quickly transfer large media files or a casual user looking for a convenient way to access your memory cards, the SmartQ C307 is a solid investment.
- Reviewed in the United States on September 19, 2024Size: SingleVerified PurchaseThe SmartQ C307 USB 3.0 Portable Card Reader is a fantastic little device! It’s incredibly compact and lightweight, making it easy to carry around in my bag or pocket. Despite its small size, it handles multiple card types, including SD, SDHC, SDXC, MicroSD, and more, making it versatile for any kind of media storage.
The USB 3.0 connection ensures fast transfer speeds, even with large files, and I’ve noticed a huge improvement in how quickly I can move data compared to older USB 2.0 readers. The all-in-one design is convenient, as it allows me to switch between cards without constantly plugging and unplugging different devices.
It’s plug-and-play, so no drivers or software are needed, and it works seamlessly with my laptop. Overall, it’s a reliable, fast, and affordable card reader that’s perfect for anyone who frequently works with different memory cards.
- Reviewed in the United States on December 15, 2024Size: SingleVerified PurchaseThe SmartQ C307 USB 3.0 portable card reader is a must-have for anyone needing quick and efficient data transfers. Its high-quality build ensures durability, while its compatibility with a wide range of cards (SD, microSD, and more) makes it versatile. Compact and lightweight, it’s perfect for day-to-day travel and fits easily into any bag or pocket. Highly convenient!
- Reviewed in the United States on April 3, 2025Size: SingleVerified PurchaseIt works very well, flash gets mounted very quickly. The only problem was that it's so thick that when the USB ports are close together, you can only use it and not the one nearby.
- Reviewed in the United States on March 30, 2025Size: SingleVerified PurchaseThis flash drive is compacked but very powerful when you need it the most
- Reviewed in the United States on February 3, 2025Size: SingleVerified PurchaseI'm not a computer genius but this thing works amazing for what I need it to do. Easy to use, easy to store. And the price was really good
- Reviewed in the United States on February 23, 2025Size: SingleVerified PurchaseEasy to use. Very convenient. If your computer does not have built in slots for these memory cards, this device is indispensable.
- Reviewed in the United States on June 1, 2024Size: SingleVerified PurchaseThis SD to flash drive adapter is a game-changer! It’s incredibly easy to use—simply insert your SD card, plug the adapter into your computer’s USB port, and you’re ready to transfer files. The build quality is excellent, and the transfer speeds are impressive. I’ve used it to quickly back up photos and videos from my camera’s SD card, and it has worked flawlessly every time. The compact size makes it perfect for travel, and the price is very reasonable for the convenience it provides. I highly recommend this adapter to anyone in need of a reliable and easy-to-use solution for transferring files from an SD card to a flash drive!
Top reviews from other countries
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AnonimoReviewed in Italy on April 6, 2025
5.0 out of 5 stars Ottimo prodotto
Size: SingleVerified PurchasePassato da un vecchio lettore di schedine 2.0 a questo 3.0 ed è tutto un'altro mondo, prima la velocità media arrivava a 15-18 mb in scrittura e poco più di 20-25 in lettura con le mie schede di memoria. Con questo lettore ora raggiungono i 80-120mb in lettura e fino agli 50-60 mb in scrittura.
Per dire col vecchio a copiare la scheda SD da 128 GB della mia retro consolle ci metteva 1:50 ore, con questo lettore 21 minuti
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pologv4Reviewed in Mexico on October 19, 2021
4.0 out of 5 stars si la arma
Size: SingleVerified Purchasefácil de utilizar, bonito diseño.
- Amazon CustomerReviewed in Canada on October 13, 2024
5.0 out of 5 stars Works perfectly, very light, fast transfer, very satistied! The USB cover could be better, but ok!
Size: SingleVerified PurchaseThe media could not be loaded.
---CONS : The USB cover could be better. Its very easy to open but hard to close (see the video). It can be open easily while you are carrying it, exposing the jack. this is fragile... It does not cover the jack completely so dust can enter in the jack (see photo) but in fact it can enter in the SD card slots, so you better store this card reader into a pouch or a compartment in your bag, if you are traveling like me and want to keep it clean and working for years.
>>>This is not a big problem so for the small price i give it 5 stars !
Amazon CustomerWorks perfectly, very light, fast transfer, very satistied! The USB cover could be better, but ok!
Reviewed in Canada on October 13, 2024
---CONS : The USB cover could be better. Its very easy to open but hard to close (see the video). It can be open easily while you are carrying it, exposing the jack. this is fragile... It does not cover the jack completely so dust can enter in the jack (see photo) but in fact it can enter in the SD card slots, so you better store this card reader into a pouch or a compartment in your bag, if you are traveling like me and want to keep it clean and working for years.
>>>This is not a big problem so for the small price i give it 5 stars !
Images in this review
- Amazon CustomerReviewed in the United Kingdom on March 7, 2025
5.0 out of 5 stars USB card reader
Size: SingleVerified PurchasePerfect!
- LorneReviewed in Spain on March 13, 2025
5.0 out of 5 stars So far so good.
Size: SingleVerified PurchaseSo far so good. It hasn't given me any connection issues or messed up my SD cards making me have to format them. I will recommend it at this current time.