I guess the audio functions have been migrated to that external unit to keep the motherboard so small. When I looked at it the other day I thought it looked pretty neat if a small build is needed, but yeah, I guess it's a new approach. As far as a motherboard audio speaker is concerned, they seem to be going out of fashion even if the pins are there. Certainly didn't get a speaker with my last two motherboards. Sad really, I like the beeps as well.
Z690 Hero, 12900K, BIOS 4001, MEI 2433.6.3.0, ME Firmware 16.1.32.2473, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.