What is USB OTG? (And what is it used for?)

Is it possible to use your favorite USB devices like mice, keyboards, and thumb drives with your smart phone? Yes, but you'll ...
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This $7 Micro SD Card Reader Works With Both USB Type-A and USB Type-C Ports

$7.01 at Amazon Use code 'NTCIF4MK' This Sabrent OTG card reader is no bigger than a standard USB flash drive. One end has a USB 3.0 Type-C port and the other end has a USB 3.0 Type A port. Both sides ...