The P6BXT-A+ V2.2E supports IDE HDD up to 40GB. Please update the latest BIOS from ECS website.

The BIOS v5.6 is the latest version for P6BAT-A+ & it does support 40GB HDD.

P6BXT-A+ v2.2E/F maximum CPU and HDD supported information as below, HDD:40G CPU: Pentium III(SECC2). 100Mhz FSB CPU–850Mhz Pentium III(SECC2). 133Mhz FSB CPU–No support Pentium III(FCPGA). 100Mhz FSB CPU–850Mhz Pentium III(FCPGA). 133Mhz FSB CPU–No support Celeron 66Mhz(PPGA) FSB CPU –533Mhz Celeron 66Mhz(FCPGA) FSB CPU –No support Celeron 100Mhz(FCPGA) FSB CPU –800Mhz VIA C3 100Mhz FSB CPU - No support VIA C3 133Mhz FSB CPU - No support