Finding a connector for Mac desktop with two USB ports

The USB ports on all newer Macs are called "USB-C". Most thumb drives still use the older, larger "USB-A" connector. The solution is to use a USB-A to USB-C adapter.

While there are many cheap "plug adapters" on the market, I prefer these inexpensive, short 6" cable adapters because the connections are firmer and they put less torque pressure on the USB-C ports built into the Mac.

a connector is just a connector

find adaptors that suits your needs

Amazon.com : usb-c to usb-a

In fact, for ongoing thumb drive use, I keep a 12" version of one of these cables permanently connected to the back of my iMac because:

1. it's easier to connect the thumb drive to the cable than to reach behind the iMac all the time and
2. any wear & tear is limited to the USB-A end of the cable not the USB-C port on the iMac