KBox A-203-sXAL4 – User Guide Preliminary Rev. 0.2
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9.4.
KBox A-203-sXAL4 Shunt Jumper Information
Figure 29: Jumper Locations on the Baseboard
1
J9: UART Select (To select UART source for COM2)
Pin 1 - 2: Enable CPLD_UART to COM2 (In case
there is a need for Serial Console Redirection)
Pin 2 - 3: Enable USB to UART to COM2
2
J4: SD Card WP (To enable write project on the SD
Card)
Pin 1 - 2: Enable Write Protect
Pin 2 - 3: Disable Write Protect
3
J13: CMOS Reset (To Restore BIOS defaults)
Pin 1 - 2: CMOS Reset
Pin 2 - 3: Default Operation (Default)
4
J21: Boot Select (For debug purpose, to allow user to
emulate external BIOS chip or flash BIOS through
J20)
Pin 1 - 2: Boot from BIOS Debug Header
Pin 2 - 3: Boot from Module (Default)
5
J15: mSata/PCIe select (To select when either mSATA
or mPCIE is used)
Pin 1 - 2: mPCIE (Default for Standard A-203)
Pin 2 - 3: mSATA
1
2
3
4
5
