JLCPCB Order

Hi, I’m ordering the V4.5 micro through JLCPCB and I’m a bit confused about whether I need to order something else for designators U3 and U5 or not. I’m not very familiar with PCBs so any help would be appreciated. I’ve attached a screenshot below that shows “No Part Selected” for U3 and U5 in my PCB order.

I saw a post mentioning that the manufacturer of Teensy/IMUPower (U5) is a Russian company which is why it’s unavailable on JLCPCB. Is there an American alternative for both Teensy/IMUPower and K7803M-1000R3, either directly through JLCPCB or through DigiKey? Thank you so much!

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Help with ordering PCB - Hardware / PCB - AgOpenGPS