View in HD at . You can use pretty much any USB flash drive with your Mac. But be sure to buy one with the right connection type, either USB-A or USB-C, or get one that has both. Most drives are preformatted for Windows, so you probably want to reformat it for your Mac. You can add and remove files from a USB flash drive using the Finder. Be sure to eject the drive first before phsyically disconnecting it.