Yes, they offer it for sale.
Yes, they offer it for sale.
I don't have real-time access to purchase locations, but you can check online marketplaces like eBay, Amazon, or specialized electronics stores for power-on/off buttons for a motherboard.
eBay, Amazon — these items aren't particularly unique; they're essentially just connecting two pins. For custom projects, a popular approach is to install an anti-vandal switch and use pre-made front panel connectors.
A switch that connects to two wires serves as an on/off control for a motherboard.