SiSSwLED.exe
(Silicon Integrated Systems SiS)
System Tray utility for the SiS 900 network cards (these are usually onboard network cards). This program displays a network usage LED in your System Tray. This LED lights up whenever network traffic takes place, much in the same way as Windows 2000 and Windows XP provide by default.
Recommendation :
Network traffic LEDs are quite useful, particularly when troubleshooting problems. Unless you experience problems with this program, leave it running. If you are using Windows 2000/XP, however, then disable this utility and use the native Windows network traffic LED instead.