I noticed that you just recently updated the hardware of the Fit-PC2i to version 1.3 and I can see you addressed some problems I have been experiencing with the BIOS battery on low power. Great!

Here's the list of changes for reference (from: http://www.fit-pc.com/wiki/index.php/Fit-PC2i_Revisions):
- Ethernet controllers upgraded to Realtek RTL8111F
- USB6 routed exclusively to miniPCIe
- USB5 routed exclusively to P38
- Added 2 pin connector for external CMOS battery
- Added TPM provision
- Removed mechanical holes in P31
- Added low voltage protection circuit
- Improvements in auto-on circuit

What does "USB5 routed exclusively to P38" mean? I have not been able to find any references to the P38 in the schematics.
Can I be so lucky as have gotten my long wished Usb on-the-go connection to the built-in Z530 USB controller (USB1-4 are using an external controller if I recall correctly)?
Why did you add pins for external BIOS battery? Is it now possible to add extra unplugged BIOS lifetime using an external BIOS battery?

Hi Deva,

Please see my answers below:

- USB5 lane routed from Intel SCH chipset to P38 connector -
Schematics capture:


Layout capture:




- Connector for external BIOS battery added in order to support batteries rated for high operating temperatures.

Thanks,
Maxim.

Hi there.
Could you please provide technical documentation for these changes as well:

- Added low voltage protection circuit
- Improvements in auto-on circuit

Thank you.

Hi,
- Low voltage protection circuit:
The system will shut itself down when power supply goes below 8V.

- Improvements in auto-on circuit:
Stability improvements.

Thanks,
Max.