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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

4.6 out of 5 stars 18,024 ratings
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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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CHOKING HAZARD -- WARNING: This product contains small magnets. Swallowed magnets can stick together across intestines causing serious infections and death. Seek immediate medical attention if magnets are swallowed or inhaled.

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Price-15% $6.79
Typical:$7.99
-29% $4.99
Typical:$6.99
$11.99-50% $4.99
List:$9.99
$4.99$6.97
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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
hardware interface
data transfer rate
operating system
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From the brand


Product Description

SmartQ USB 3.0 SD / microsd Card Reader

Card Reader
sd usb
micro sd card reader

SmartQ Card reader comparison

USB 3.0 Card Reader

2-IN-1 SD Card Reader

SD Card Reader for iPhone

USB C card Reader

sd card reader usb c

micro sd card reader

micro sd reader

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
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 $6.99 $12.99 $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

Product information

Technical Details

Collapse all
Brand ‎SmartQ
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

Additional Information

Customer Reviews
4.6 out of 5 stars 18,024 ratings

4.6 out of 5 stars
Best Sellers Rank #69 in Computer Memory Card Readers

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Product Warranty: For warranty information about this product, please click here

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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

4.6 out of 5 stars
18,024 global ratings

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Customers 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

905 customers mention "Functionality"741 positive164 negative

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

266 customers mention "Value for money"207 positive59 negative

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

233 customers mention "Ease of use"222 positive11 negative

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

199 customers mention "Speed"172 positive27 negative

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

114 customers mention "Size"110 positive4 negative

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

104 customers mention "Card readability"82 positive22 negative

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

89 customers mention "Usb port"68 positive21 negative

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

203 customers mention "Quality"128 positive75 negative

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

Simple, easy to use card reader
5 out of 5 stars
Simple, easy to use card reader
Bought this because my old card reader decided to stop working, and I wanted a simple way to transfer data from micro SD cards without needing to use the adapter. This has a slot for the tiny micro sd cards, but it does stick out a little bit. It's totally fine, just might mess with anyone that has an OCD or something lol. There's no spring retention thankfully, just press the card in. One less thing to break. The card reader doesn't get hot even after transferring and deleting gigs of data. It stays cool, and fast. There wasn't much of a slow down when testing with my Sandisk 400gb micro sd card. It could look a little better, it's got kind of a sharp, angular design, but it's fine. I'm personally a bigger fan of smaller card readers, and this one is a little big for my taste (especially the large "slide" style opening), but if it works, it works. Plus, it's inexpensive, so it's not a big deal. A very good, simple & effective SD & micro SD card reader.
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Top reviews from the United States

  • Reviewed in the United States on August 8, 2024
    Size: SingleVerified Purchase
    The 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.
    3 people found this helpful
    Report
  • Reviewed in the United States on September 19, 2024
    Size: SingleVerified Purchase
    The 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, 2024
    Size: SingleVerified Purchase
    The 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, 2025
    Size: SingleVerified Purchase
    It 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, 2025
    Size: SingleVerified Purchase
    This flash drive is compacked but very powerful when you need it the most
  • Reviewed in the United States on February 3, 2025
    Size: SingleVerified Purchase
    I'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, 2025
    Size: SingleVerified Purchase
    Easy 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, 2024
    Size: SingleVerified Purchase
    This 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!
    4 people found this helpful
    Report

Top reviews from other countries

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  • Anonimo
    5.0 out of 5 stars Ottimo prodotto
    Reviewed in Italy on April 6, 2025
    Size: SingleVerified Purchase
    Passato 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
    Report
  • pologv4
    4.0 out of 5 stars si la arma
    Reviewed in Mexico on October 19, 2021
    Size: SingleVerified Purchase
    fácil de utilizar, bonito diseño.
  • Amazon Customer
    5.0 out of 5 stars Works perfectly, very light, fast transfer, very satistied! The USB cover could be better, but ok!
    Reviewed in Canada on October 13, 2024
    Size: SingleVerified Purchase
    The media could not be loaded.
    +++ PROS : I have it for a month and it works perfectly, very light and portable for travel, very fast transfer, i am very satistied of this product.
    ---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 !
    Customer image
    Amazon Customer
    5.0 out of 5 stars
    Works perfectly, very light, fast transfer, very satistied! The USB cover could be better, but ok!

    Reviewed in Canada on October 13, 2024
    +++ PROS : I have it for a month and it works perfectly, very light and portable for travel, very fast transfer, i am very satistied of this product.
    ---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
    Customer image
  • Amazon Customer
    5.0 out of 5 stars USB card reader
    Reviewed in the United Kingdom on March 7, 2025
    Size: SingleVerified Purchase
    Perfect!
  • Lorne
    5.0 out of 5 stars So far so good.
    Reviewed in Spain on March 13, 2025
    Size: SingleVerified Purchase
    So 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.