nostr:npub1hverte66k9km8a46cam7qqu8h86rk22ugrxn9dajz9xwh374ydgszxlgwc nostr:npub1zdp33shl69xr0uq3x8n5gsjykq9upycwh6nqm02c3f6x0frrn0dq42vqv8 Electronic devices need different voltages and different amounts of power, so there will always be different power adaptors unless you make them all adjustable. Some need 5V, some need 9V, some need 12V, some even need 18V or 24V, some need symmetric power sources, some need two or three different voltages and a special plug with several prongs to deliver them all.