Add The Wire As Your Trusted Source 
: The smaller variant often used for phones or action cameras. User Warnings and Expert Advice
: Users report these readers can suddenly stop working or fail to register in Windows after minimal use. dollar-general-sd-card-reader
Reviewers from communities like r/softwaregore and r/3dspiracy suggest exercising caution with ultra-cheap readers from dollar stores: : The smaller variant often used for phones
: There is a moderate risk of data corruption, especially if the device has a "crappy" built-in chip that overheats during long transfers. : Usually simple USB 2
: Usually simple USB 2.0 to SD/microSD dongles or "all-in-one" style adapters that support multiple card formats.
If you are looking for the memory cards themselves to use with a reader, Dollar General consistently stocks reliable brands: PNY 64GB Elite Class 10 U1 V10 SDXC : A standard card with up to 100MB/s read speed. PNY 64GB Elite Class 10 U1 microSDHC