1 / 7SZHAIYIJIN OL+B SD Card Reader with USB-C and Lightning
The SZHAIYIJIN OL+B SD card reader connects SD or microSD cards to compatible phones, tablets, and computers through USB-C or Lightning. Its claimed no-app setup and two-way file transfer on iOS 13 or later make it suited to moving camera media on the go, though older iOS versions have more limited transfer support.
At a glance
- Supports standard SD and microSD/TF cards. The listing says Wi-Fi SD cards are not supported.
- Includes a detachable USB-C-to-Lightning adapter according to the product description, for connecting through either connector type.
- Listing claims no separate app is required. Newer iOS instructions use the Files app for file access and two-way transfers.
- The listing describes USB peripheral support, with a maximum peripheral current of 500 mA. It excludes printers and hard disk drives.
Reference price: $16.99
Price checked: Nov 13, 2026
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Pros and cons
Pros
- Two connector options broaden the range of listed phones, tablets, and computers it can connect to.
- Supports both standard SD and microSD cards, useful for camera and trail-camera media.
- The listing describes two-way transfer of files on iOS 13 or later, not just importing photos.
Cons
- The stated transfer rate is 25 megabits_per_second, a relevant limitation for buyers who regularly move large files.
Technical specifications
11 specifications| Brand | SZHAIYIJIN |
|---|---|
| Model | OL+B |
| Color | Black |
| Connections listed | Lightning, USB Type C |
|---|---|
| Media types | Microsd Card, SD Card, USB 3.0 |
| Hardware interfaces | MicroSD, Secure Digital Card, USB 3.0 |
| Slot count | 3 |
| Listed data transfer rate | 25 megabits_per_second |
|---|---|
| Operating system listed | iOS |
| Compatible devices listed | Laptop, Smartphone, Tablet, iPhone |
| Dimensions | 3.5"L x 2.5"W x 0.54"H |
|---|
What to know before buying
Listing details to confirm
The listing is inconsistent about iOS support: it claims two-way file transfer for iOS 13–18, while its older-device instructions limit iOS 9.2–12.5.7 to one-way photo and video imports. It also describes USB-C compatibility broadly but provides no full compatibility guarantee. Confirm your device, iOS version, card format, and intended peripheral before buying. The instructions say cards must be FAT32 or exFAT for iPhone recognition and that some files may need a separate app to open.
Who is it for?
A good fit for
- iPhone or iPad owners who want to access photos and files on SD or microSD cards without a computer.
- Photographers and trail-camera users who need a compact way to view or transfer card media to a compatible mobile device.
- People with compatible USB-C or Lightning devices who need both card-slot and USB peripheral connectivity.
Less suited to
- Buyers who need a reader for Wi-Fi SD cards, printers, or hard disk drives.
- People seeking an established high-speed workflow for frequent large transfers, given the listed rate of 25 megabits_per_second.
- Users who require confirmed compatibility with a specific device or unrestricted two-way transfers on older iOS versions.

Customer reviews on Amazon
- 5 stars
74% 74% - 4 stars
9% 9% - 3 stars
6% 6% - 2 stars
2% 2% - 1 star
9% 9%
Customer feedback highlights easy setup and convenient photo transfers, with one reported example of transferring over 200 pictures to an iPhone 14 in under two minutes. Other customers report compatibility problems, and opinions on value are mixed. These reports suggest the reader may suit straightforward card-to-phone transfers, but they do not establish compatibility with every device or guarantee a particular speed. The listing gives a transfer rate of 25 megabits_per_second.
Positive themes
- Customers describe the reader as easy to connect and use.
- Customers report convenient, quick photo transfers, including a reported transfer of over 200 pictures to an iPhone 14 in under two minutes.
Mixed feedback
- Some customers report compatibility issues despite others saying it works with iPhones and iPads.
- Customer opinions on value for money are mixed.
Frequently asked questions
Which card types does the reader support?
The listing specifies standard SD and microSD/TF cards, including SD/SDHC and microSD/TF. It says Wi-Fi SD cards are not supported.
Does it need a separate app?
The listing claims no app is required. Its instructions use the Photos app for older iOS versions and the Files app for iOS 13 or later. Some file types may need another app to open.
Can it transfer files both ways?
The listing claims two-way file transfers for iOS 13 or later. For iOS 9.2–12.5.7, it describes one-way photo and video imports, so check the instructions for your iOS version.
Will it work with any USB device?
No. The listing claims support for certain peripherals with a maximum current of 500 mA and specifically says printers and hard disk drives are not supported.

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