The Neoware CA9 has a standard PC Phoenix AwardBIOS. Hit the DEL key on power-up to get into it.
The Firmware Information screen reports:
BIOS Message G260 V:5.02.201-010606 BIOS Version 6.00 PG
The boot options are
The USB-HDD option let me boot Tiny Core 4.0 from a pen drive created with LiLi (Linux Live USB).
The standard firmware is Windows CE 5.0