I'm seeing a lot of Thunderbolt 3 peripherals hitting the market; the ones that use the USB-type C connector and can plug into newer Macs. I'm also seeing adapters that let you plug older Thunderbolt 2 peripherals (using the displayport connector) into newer Macs that have the type-C connector. I can't find an adapter to do the opposite, though; I want to plug Thunderbolt 3 peripherals into my 2015 iMac that has TB2 ports. For instance, this drive: http://www.sonnettech.com/product/fusiontb3pcieflashdrive.html Does this adapter exist, or am I SOL? It's a bit depressing because this iMac is not that old and should be able to support this newer hardware.