D-Link KVM-410 - Single Port KVM Switch User Manual page 23

Section  - Configuration
To enable MAC filtering for User Stations, Click the MAC Filter Enable check box so a check mark appears.
To add a Filter:
1. Select whether the Filter will include or exclude specified
User Stations.
2. Click Add. A dialog box similar to the one below will
appear:
3. Specify the MAC Address to filter in the dialog box, then Click OK.
2. Repeat these steps for any additional MAC Addresses you want to filter.
To delete a filter, select the filter and Click Remove.
To modify an existing filter, select it and Click Edit. The Edit dialog box is similar to the Add dialog box. When prompted,
simply delete the old address and replace it with the new one.
D-Link KVM-410 User Manual
User Station Filtering - MAC Address