Best SanDisk Portable / External Hard Drives

Cheap USB 3.0 Micro SD card adapter (Rated for 170MB/S Sequential Read, 90MB/S Sequential Write) - So while this doesn't do everything I wanted, it… Read more

is cheap and it does beat other more expensive sd card readers. I did not give this 5 stars as I was hoping (and actually assuming) that this reader would be able to would match SanDisk's own sd card speeds but while it can cope with Sandisk Ultra Speeds it can't reach the SanDisk Extreme (or Extreme Pro) speeds. (Though it is still compatible!)

What I like ------------ * Size - It is small and does not have multiple other readers I will never use * Cheap - It was $15 at time of writing * Speed - While not as fast as I would have liked it is quicker than my computers existing sd card reader * Compared - When compared to a similarly priced UGreen USB 3.0 SD card reader it is about the same speed. (See CrystalDiskMark check) * Quoted speeds - My general experience with SanDisk is that the actual achievable speeds are generally 10MB/s better than the Quoted speeds. (Presumably so it averages out)

What I don't like ------------------ * Published specs - To find out the rated Read speed you have to look at the back of the product! (Picture provided below) * Write speeds - The maximum write speeds seem to be so considerably and I don't understand why. I can understand why the SD card it's self has limited write speed but not why the adapter should be a bottle neck. * Non-sequential speeds - Not published * Storage - It does not have a keyring loop so this sucker is going to get lost! * Small print - I don't like that important info is only available on the back of the product in ultra small print!

Specs - Published on packaging in ultra small print! ------- * Name: SanDisk MobileMate USB 3.0 Reader * Model: SDDR-B531-GN6NN * Interfaces: USB3.0, USB2 , microSD, microSDHC, microSDXC. (USB type A port required) * Max sequential speeds: Read 170MB/s , Write 90MB/s (Note: SanDisk seems to allow +10MB/s for error) * OS compatibility: Window 7+, macOS X v10.6+, Linux Kernel 2.6+ (Note: Linux and Windows 11 not mentioned on packaging but it works!) * Warranty: 2Years * Recycled materials: packaging contains 20% recycled materials * Barcodes: UPC 619659169039, Internal Code P001-003748 * Certifications: CE, FCC, EAC, UKCA certified * SD compatibility: Compatible with the SD-3C standard (which covers microSD family) * Country of manufacture: Made in China * Parent company: Western Digital

My use case -------------- I brought this because I have just brought a couple of SanDisk Extreme Micro SD cards for my Raspberry Pis (A low power credit card sized computer) and I wanted to test them at full speed. I thought being USB3.0 and SanDisk that it would be able to cope with the SanDisk Extreme range of SD cards. I should have looked at the advert more closely. Also why are the write speeds are only published in really tiny print on the back of the pack and not included in the online specs?!

Try to back up the iphone. Continual problems, that's if the thing actually gets picked up the the iphone at all. Backs up just a few files. … Read more

Failures in between with "Backup failed. Try again Later" like it's some sort of web problem. Waste of money.