I've read that 1.5M is the ideal length for a USB cable used for audio.
@sls883 I’m not sure that’s the case with USB. That was once thought to be the case for SPDIF and AES/EBU digital cables but I’ve since read that as digital has evolved that’s no longer the case and 1m is fine as well. Maybe an audio engineer will chime in and clarify, but getting a 1m cable can obviously save a lot of $$$ if it can work as well.