Common Tech Symbols
The power symbol typically signifies a device's on/off button
The refresh symbol reloads the current web page and is usually located near the top of the browser next to the URL bar.
The volume symbols signify weather or not the volume is on or muted. If muted, there is often a slash through the speaker icon. Depending on the software, the volume icon may reflect the volume level by the number of "soundwaves" emmited from the speaker icon.
The recycle symbol, in technology, typically symbolizes a place where your files go before you delete them completely.
The WiFi symbol, represented also as a stair-step icon, signifies available wireless internet connections.
The location icon signifies that a location service is active or in use.
The ethernet symbol signifies an available wired connection port.
The Bluetooth symbol indicates the ability to connect a Bluetooth-compatible device.
The USB port symbols signifies a port available for connecting many types of devices.