> # Configuring X2 DWDM Transceiver Frequency

> ## Restrictions

> This feature is supported only in MDS 9134 modules. With MDS 9134 modules, the 10-Gigabit Ethernet ports must be in a down state when you configure the X2 transceiver frequency.

> ## Detailed Steps

> To configure the X2 DWDM transceiver frequency using Device Manager, follow these steps:

> 1. From the Device Manager menu bar, select Physical > Modules.

> The module configuration window is displayed.

> 2. Choose an XcvrFrequencyConfig option button.
> 3. Click Apply.

> To configure the X2 DWDM transceiver frequency, follow these steps:

> 1. From the Physical Attributes pane, select Hardware.

> The module configuration window is displayed.

> 2. Click the Card Module Config tab.
> 3. In the X2 XcvrFrequencyConfig column, choose an option.
> 4. Click Apply.

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