Solution:

There are three versions of PCM-5868 which is equipped to PPC-120/140. And the system BIOSs are also different. When upgarding your system BIOS, please refer below list to download suitable BIOS file from web site. In addition, PCB change information is included. ===== Normal BIOS ==== 5868v110.bin --- For PCM-5868 Rev.A1 01-3 (initial BIOS). 5868v111.bin --- For PCM-5866 Rev.A1 01-3 5868V200.bin --- For PCM-5866 Rev.A1 01-3 1. Fix USB Bug 2. FiX AMD K6-2 + USB BOOT --------------------------------------------------------------------- 5868v210.bin --- For PCM-5868 Rev.B1 01-3 (FCC class.B , New core BIOS) 5868V211.bin --- For PCM-5868 Rev.B1 01-3 1. Fix AMD K6-2 + USB BOOT 5868V212.bin --- For PCM-5868 Rev.B1 01-3 1.Disable "Power Button Eable" bit function:ACPI:03h[8] Avoid in AT POWER condition system will have malfunctionto enter sleeping mode. --------------------------------------------------------------------- 5868V220.bin --- For PCM-5868 Rev.B2 01-2 (1. ITE8661/8663 CHANGE TO W83877TF) 2. RTL8139 CHANGE TO RTL8139A 3. ESS1869 CHANGE TO ESS1898 (ESS changes mode name.) 4. SUPPORT TI1251A/B, ALSO SUPPORT NO CARDBUS VERSION 5. SUPPORT -12V ON BOARD 6. DON'T SUPPORT ATX FUNCTION 7. LIMITATIOM FOR USB KEYBOARD + AWARD FLASH 8. SUPPORT AMD K6-2 + USB BOOT OK! 9. SUPPORT 8.4GB HDD (All BIOS versions supports this function.) 5868V221.bin --- For PCM-5868 Rev.B2 01-2 1.Disable "Power Button Eable" bit function:ACPI:03h[8] Avoid in AT POWER condition system will have malfunctionto enter sleeping mode. 5868V222.bin --- For PCM-5868 Rev.B2 01-2 Because the speaker cannot work fine, t