This PCIe Q-Release button for Asus Alder Lake motherboards is a

PCIe Slot Q-Release, Q-Latch, pre-mounted IO shield, Q-LED, BIOS FlashBack™ button

Slot it in, nothing to release That's the easy release button when removing a card

pcie slot pinout PCIe slots allow your motherboard to connect with your PC's most critical components and provide key functionality

pcie slot width Q-Release is a eject mechanism for ASUS motherboards with PCIe slots #PC #PCBuild