

💼 Elevate your workflow with the ultimate dual-slot USB-C card reader!
The Anker PowerExpand 2-in-1 USB-C Card Reader offers dual SD and microSD slots with USB 3.1 Gen 1 speeds, designed for seamless compatibility with laptops and smartphones. Its ultra-compact form factor ensures easy portability and minimal desk clutter, while an 18-month warranty guarantees reliable performance for professional content creators and managers on the move.









| ASIN | B07NW8RPYN |
| Best Sellers Rank | #6 in Computer Memory Card Readers |
| Brand | Anker |
| Color | Grey |
| Customer Reviews | 4.6 4.6 out of 5 stars (7,664) |
| Date First Available | March 28, 2019 |
| Item Dimensions LxWxH | 1.65 x 0.67 x 0.37 inches |
| Item Weight | 0.32 ounces |
| Item model number | AK-A83700A2 |
| Manufacturer | Anker |
| Operating System | Chrome OS, Mac OS |
| Product Dimensions | 1.65 x 0.67 x 0.37 inches |
| Series | PowerExpand |
Z**H
Good Product
Nice compact size. Easy to use. Works perfectly.
R**T
A tiny workhorse that never flinches — perfect for Pi flashing on the fly
I’ve put this little Anker reader through absolute abuse flashing Raspberry Pi OS images on my Windows laptop, pulling video off microSD cards, moving firmware, backing up configs, you name it. It lives in my backpack and gets used constantly, and it hasn’t missed a beat once. Transfer speeds are fast and consistent. No random disconnects, no “device not recognized,” no cheap plastic heat-up nonsense. The dual SD + microSD slot setup is perfect when you’re bouncing between Pi projects and other devices. Plug it in, drop your image, and you’re flashing a fresh OS in seconds. What I really love is that it’s built like a tank for something this small. Solid metal, no flex, no cheap feel. It just works every single time which is exactly what you want when you’re doing quick field updates or emergency card reads. If you do anything with Raspberry Pi, SDR, drones, cameras, or honestly just want a reliable SD reader that won’t quit… this is the one. Anker knocked it out of the park.
D**L
Much faster than Camera direct-connect copying
Very compact! Works as expected. Much faster than connecting the go-pro itself to the USB for copying files off. I should have bought one of these years ago.
B**N
Great Product
This works well to read my GO Pro mini SD card on my MacBook Air. Price was right, and it runs smoothly.
C**E
Does not support faster than SDR104 transfer rate (~100MiB/s)
The official SD card specification (for UHS-1) tops out at around 100MB/s (before overhead, etc so you usually see more like 95). Sandisk, Samsung and others that release UHS-1 cards (which is the most common by far today) that claim reads and/or writes in excess of this have re-used the "double data rate" mode of older SD specifications at lower clock speeds and applied it to the maximum 208Mhz SDR mode to transfer up to twice as much data as the normal maximum in the official specification. That modification is fairly common these days (since UHS-2 didn't really take off since it needs more pins and has other issues) but you never know unless the card reader manufacturer tells you they support these "non-standard" (but nonetheless desirable) "extra" speeds. So: this card reader worked fine, didn't have any issues, and I got the maximum speed (of about 95 MiB/s reads, with writes being a bit slower: 83 MiB/s or so). It was able to read the cards I tested between 32GB and 1TB (well, "1TB" because it was a TeamGroup that was short 10GB, even if you used base 10 and not power of 2, ie TB instead of TiB). Like all readers of this type that I've had/tested, it was capable of simultaneously accessing two cards at once (one full-sized and one micro) but you get less than half speed on each (ie: more like 40 MiB/s + 40 MiB/s when both are reading, not either 95 + 95 or even 47.5 +47.5). I'm guessing most or all of these have a single SD controller and it switches between the two (with some overhead). If it had supported the higher (non-standard) speeds I probably would have kept it but I already got a cheaper one that does support them as well as both USB-C and A (where this one only supports C). Bottom line: this was well made, smaller than some, and follows the SD card specification, but for "just" that, there are less expensive options.
P**O
Small, portable and fits in your pocket
I needed an SD card reader for my iPhone that was small, portable and didn't have wires dangling from it. This easily fits in my pocket and works great.
K**.
Easy to use!
I bought this for my son to use during his senior year, and it has been perfect! He needed an easy way to transfer pictures from his camera to his phone so he could quickly post them on social media, and this little reader makes it effortless. It’s truly plug-and-play—no setup hassles at all. Just insert the SD card, plug it in, and the photos transfer right away. The dual slot is a nice touch since it supports both regular SD cards and microSD, making it super versatile for different devices. Compact, lightweight, and easy to throw in a camera bag or backpack. For the price, the quality is excellent, and it does exactly what it’s supposed to do. Highly recommend for students, photographers, or anyone who needs a simple way to move photos from a camera to another device.
P**N
Great for editing anywhere on anything.
Works good. Easy to use, no downloading of an app to use. It's nice to be able to download and edit from anywhere now. My drone uses a micro card, so this is perfect.
Trustpilot
2 weeks ago
2 weeks ago