4 layers

Hexahub
TheHexaCube/hexahub
Smart USB Hub with additional MCU for funky features (current sense, port switching, maybe more?)
327 parts
Boards in 1 GitHub repository, designed in KiCad, that use the RTT025002FTH by RALEC (-55℃~+155℃ 50V 50kΩ 62.5mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHS). See how each wires it, with its parts, size, README and files; the RTT025002FTH’s symbol, footprint and pinout are on its own page.

TheHexaCube/hexahub
Smart USB Hub with additional MCU for funky features (current sense, port switching, maybe more?)