Agree with guest...

I forgot, not woken up properly... the stereo line in of a decent digital recorder is ideal.
Then you can import the files to your computer.

For my purposes, USB interfaces with Laptop are handy for direct recording to multitrack software..

But I bought Zoom & Olympus with the primary intention of easily transferring cassettes and LPs to digital files.

Good USB interfaces should have better quality components than the Zoom [and other brands]
but the sound difference might be negligible to most ears.

The only problem I find with portable recorders is the screens are too small for my poor close up eyesight
to properly see the input meter readings...

Have to take my glasses off and hold the recorder right up in front of my nose...