Which file systems and protocols does the Samsung Galaxy S5 support over USB OTG?

The Samsung Galaxy S5 supports USB OTG, but with only 2 filesystems.


The other day I was trying to find out exactly what file systems of attached USB OTG drives my (Verizon) Samsung Galaxy S5 (SM-G900V) supports, but couldn’t find anything on Google. Therefore, I decided to buy an inexpensive USB 2.0 OTG adapter cable from Monoprice* and do some testing myself.

The drives I used were a SanDisk Cruzer Mini and a Sony Microvault for USB 2.0; and an ADATA DashDrive for USB 3.0.

FAT32 and exFAT formatting were done using Storage -> Disk Management in Computer Management on Windows 8.1 Update 1 Professional 64-bit, while ext4 formatting was done using Linux Mint 17’s USB Stick Formatter.

The results are in, and they’re not that great:

Pretty awful OTG support here.
Pretty awful OTG support here.

Basically the S5 refuses to mount anything that isn’t USB 2.0 AND FAT32 or exFAT.** If you have any comments, counterexamples, or ideas please be sure to share.

*I didn’t buy a USB 3.0 OTG cable as I couldn’t find one online that was guaranteed to even fit the S5. I’ve never encountered that issue with USB before, so I have no idea if the fault is with the cable OEM or Samsung.

Also, part of my motivation for getting an OTG cable is to facilitate Sneakernet file transfers while out of the house. Since very few phones support micro USB 3.0, I decided to go the 2.0 route.

** I don’t own a Mac and so couldn’t try HFS Plus, sorry.

Author: jdrch

ISTJ, Rice Owl, UF Gator, mechanical engineer. STEM, sports, music, movies, humor. Account mine only & unaffiliated.

5 thoughts on “Which file systems and protocols does the Samsung Galaxy S5 support over USB OTG?”

  1. thanks, I’m thinking about buying usb 3.0 OTG, wonder if that would work with usb 3.0 drives, info about OTG and S5 is really scarce..I’ll let you know


    1. I wouldn’t recommend a USB 3.0 OTG adapter as the S5 & Note 3 are the only phones on the market that support it, which severely limits the adapter’s usefulness.



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