3.8.2.2. FATAL: Module wctdm/fxs/fxo not found

The TDM400P cards require the PCI bus to be Version 2.2. If you attempt to load the Zapata telephony drivers with an older version, you may get the following errors:

When attempting to load the wctdm driver, you may see this error:
```
    FATAL: Module wctdm not found
```

When attempting to load the wctdm or wcfxo driver, you may see an error such as this:

    ZT_CHANCONFIG failed on channel 1: No such device or address (6)
    FATAL: Module wctdm not found

The only way to resolve these errors is to use a newer motherboard that supports PCI Version 2.2 .

	Tip
	You may also encounter these errors if the power has not been attached to the Molex connector found on the TDM400P card.