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Apu2 vs apu3

APU2 vs APU3

Brief walkthrough APU2 and APU3 schematics show below difference:

  • power/reset/watchdog header changed
  • LPC header changed to debug
  • RXD3/TXD3 wired to PCIe x1 expansion
  • SIM switch added
  • use of mPCI slots explicitly specified
  • fan control removed
  • SIMSWAP pin added
  • APU straps changed
  • I'm not sure about mSATA changes, but it looks something is different
  • internal us2.0 header added
  • some PCIe connections removed (page 5)