BIOS Features: Win95 PnP, PCI bus auto, NCR SDMS, IDE LBA mode (>520 MB), EIDE mode (4 HDD), IDE block mode, IDE PIO mode auto (up to PIO Mode 4), multi I/O on board functions, dark green mode support Note: Update version. This mainboard came with EPROM BIOS. Please use EPROM writer to update you BIOS. (7/30/97)