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)