CL31-A BIOS Release PCB: 1.0 BIOS: Award BIOS file name: rb402-3955.bin BIOS version: RB402 Release date: 1999-1-13 Flash utility: flash625.exe Fixes: 1. Serial Mouse can't wake up from Windows 98 ACPI mode. 2. CPU clock can't be changed in BIOS Setup 3. Windows98 Keyboard Power On by Power ON/OFF KEY (Original Wake up Key) 4. Some PCI audio drivers could use only IRQ5.