EFI Boot doesn't show after installing OpenCore to USB disk

Hi. I'm trying to install macOS Sequoia to old Mac 4,1 (mid 2010) which is currently on a 10.13.6 High Sierra. After creating macOS installer on a USB disk, I installed the OpenCore to that USB disk. Rebooting and holding alt key (I'm using wireless windows keyboard) doesn't do anything, it doesn't load into the boot option and just boot into default mac disk. The USB drive also doesn't show in Setting's Startup Disk nor in Windows+R recovery mode's Startup Disk lists. Btw, I'm using USB hub for mouse and keyboard as OCLP says in their compatibility list. What else I can try to boot into OpenCore? TIA.

submitted by /u/gipaaa
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