Samsung 64gb EVO TF card – was a little tricky to get in. About the third time the card was recognized. Very fast read/write.
MIXZA TOHAOLL Ocean Series 8GB Micro SD Memory Card – they work well. Same read/write speed using USB 2.0 port or USB 3.0 port or internel TF card drive. About half the speed of samsung card above.
OTG USB 3.1 Type C To 2 Port USB 3.0 Hub + TF SD Card Reader Adapter (link) USB drives and TF cards recognized.
2 in 1 USB 3.0 Card Reader – BLACK (link) Not recognised in supplied cable or USB2.0 hub. Recognised in above USB3.1 adapter.
I found that downloading movie files and saving directly to a USB drive led to corrupted files. I download to C: then copy to USB drive.