Can be directly transferred into your mouser cart by copying & pasting the text below into the mouser part list import tool (you may need to log in at mouser before the tool is available):
https://www.mouser.com/tools/part-list-import.aspx

K330J15C0GF5TL2|8
594-K104K15X7RF5TL2|4
806-KCDX-5S-S2|4
534-7695|2
517-4818-3000-CP|4
517-30310-6002|1
ECS-200-18-4X-CKM|4
660-MF1/4DCT52R2200F|8

These parts are not required for a normal build - in general: don't buy them! They would go to the greyed-out locations specified as DNF ("do not fit") in the BOM above. If you want them anyways, e.g. for a special usecase, you can also copy & paste them into your mouser cart:

517-30310-6002|4

You can manually add these to your cart using the links below. If you are buying a midiphy essential kit, these should be included already. If you are buying plain PCBs, these are necessary to complete your build.

^* Disclaimer: although we have taken the best care possible, we cannot guarantee 100% accuracy and we cannot be held liable for erroneous orders when using this tool, including (but not limited to) incorrect quantities and/or types of components ordered through midiphy or other suppliers.