There's a known issue: previous wires are still soldered.

This Switchcraft patch panel is easy to use. First, make sure you turn off the power supply before installation to avoid any electrical risks. When connecting wires, gently insert them into the appropriate positions on the panel. Note that there are some previous wires still soldered, so you may need to remove or work around them as per your requirements. For maintenance, keep the panel in a dry and clean environment. Regularly check the connections to ensure they are secure. If you notice any loose wires or signs of damage, replace or repair them promptly. This will help the patch panel work well for a long time.