A plate that covers an opening in a device or a wall to protect it from moisture or dust.
（设备或墙壁开口处防尘或防潮的）盖板，挡板
Example sentencesExamples
Simply pull the top green lever up, remove a blanking plate, install your cards and then replace the green lever.
It includes a mounting system for this in the form of a PCI blanking plate with a central hole for the dial to be mounted on.
Each of the PCI slots are covered with blanking plates and the rest of the case, the side panels are held in place with two thumbscrews.
The PCI insert is simply a blanking plate of plastic, it isn't designed to interface with the system in anyway and is there purely to hold the cooler in place.
If you remove a card and don't replace it with another, the hole should be closed with a blanking plate.