• EFA P55T-PIO-B (no Sound)
• EFA P55TPIO-B (no Sound)
• EFA P55TSPIO-B

• DALLAS RTC coin cell empty

The motherboard's Real-Time Clock (RTC) chip contains a coin cell that may have drained, causing the loss of CMOS settings. This can result in an inability to save settings, causing system instability or failure to boot. To fix this, the RTC chip can be replaced with an equivalent or repaired by cutting into it and soldering on a new external coin cell holder. Replacement guides are available at https://github.com/necroware/nwX287 or https://github.com/necroware/nw12887, depending on the actual chip used.

Compared to P55T-SPIO/P55T-PIO this board has Pipeline Burst Cache chips. 4 possible SIO chips: SMC665IR/SMC665GT/ALI M5113 A1/ALI M5113 A2 so you need to pay attention what bios to flash!

MMX CPUs are supported only with the split-voltage VRM installed.