Can I turn it off? (External HDD question)

[CANiSLAYu]

I have this external HDD enclosure with a Seagate 120GB 8MB drive and just set it up today. There's a power on/off switch on it. I'm just wondering like if I'm going to bed or something and I leave my computer on, but want to turn the drive off can I just flip the switch without damaging anything? Or do I have to take another step before flipping the switch? TIA.

 

[Falls Included]

i usually just hit the switch... just make sure that nothing is getting transfered, and it should be just fine

 

[tiebird321]

in windows xp in the system tray (arrea on the bottom right)
there should be a icon that looks like a green arrow
right click on it and pick "safely remove hardware"
and it will let you disconect the HD safely