Well, my Intel D810EMO motherboard arrived from NWTEC, today.
I'd like to replace the stock motherboard because it's got the original Intel 82810 Whitney chipset (66/100 MHz FSB) and the NWTEC motherboard arrived with the later 82810E chipset which also supports the 133 MHz FSB speed. The original board has no display cache, and the NWTEC board has these chips installed (U3D1 and U4D1) near the battery. On the NWTEC board, there are two additional power capacitors installed (C3J2 and C3J3).
There are a few more and a few less audio connectors than the original motherboard:
- The NWTEC board has pink MIC IN (J1D1) and green LINE OUT (J1D2) jacks installed. The original has a 14-pin AUD header (J1D3) installed for connecting the microphone and speakers. The original has two small SMD connector packs installed (CP1D1 and CP1D2) to connect the signal lines to the 14-pin AUD header (J1D3). The only signal lines used from the J1D3 14-pin header are 11, 12, 13, and 14. Presumably these are for the two built-in speakers.
- The NWTEC has a black audio connector (J2D1) behind the 14-pin AUD header (J1D3). The original board does not have this audio connector.
- The NWTEC board has no white MIC (J2A24) or green AUDIO (J2A1) connectors on the edge near the PCI slot, nor a 16-pin header (J3A1). The original has all of these installed with another SMD connector pack (CP3A2) for the built-in microphone and modem.
Hope this helps others who might be considering the swap. It appears it would take a fair amount of surface-mount micro-soldering work to use the new motherboard exactly like the original.