P5B-E Plus Release BIOS 0304
1. Support conroe L processor
2. Update JMicron option rom 1.06.22
3. Modify CPU fan low limit speed from 800 RPM to 600 RPM
4. Implement ASUS CGI performance with ATI 1950 graphic cards

ASUS P5B-E Plus v0304 Bios

P5B Deluxe Release BIOS version 0804
1. Support conroe L processor
2. Update JMicron option rom 1.06.22
3. Modify CPU fan low limit speed from 800 RPM to 600 RPM
4. Implement ASUS CGI performance with ATI 1950 graphic cards

ASUS P5B Deluxe WiFi-AP v0804 Bios