The Great Search – Small 2, 3 and 4-Port USB Hub Chips (video). We recently did a design for a simple 4-port USB hub – but we wanted to also show off some nicer hub chips available! Hub chips are available in 2, 3 and 4 port designs, and can be configured with LEDs, custom USB descriptors, and over-current detection. These could be useful when you have a product with more than one USB-interface chip (say one for native, one for debug USB) so that instead of two confusing USB ports you can have one interface with both devices exposed! Or, if you are designing a board with embedded linux, you can take advantage of the built in hub support to have multiple USB ports. There’s also some interesting integrated hub chips like the LAN9513 which has an Ethernet chip built in.
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