PNG ICO ICNS MORE
Oxygen
voice, jack, line
DarkOliveGreen
128x128
Oxygen-Refit
input, Audio, line
LED
chart, line, graph
16x16
Human-O2
Audio, input, line
Computer & hardware
3D
Human o2
input, line, Audio
Mixed
Pixel
Led Icons
line, chart
Network & communications
Smooth
input, Audio, sound