Connecting 2.5" HDD via USB Enclosure to PC (power issue)

[vertical1]

Hi.
I have a 1TB 2.5" HDD which i put it in an enclosure and currently i use it via usb.
now i have few questions
1- the maximum power consumption of HDD is 850mA and usb 2 ports max current is 500mA. the enclosure just have a normal cable not Y cable.
is it ok to use it with normal cable or it may harm the HDD
2- does the HDD limits the power consumption with usb2 intelligently (like decreasing motor speed or ...) or it may reach to current limit point some times?

3- if i connect it to USB 3 port, would it solves the problem (i thought maybe after PC initializes a usb 2 device, it may not provides 900 mA on USB 3 port for that connection)

Thanks a lot .

 

[Phillip Corcoran]

Insufficient power won't damage the drive - - it just won't work (it won't be detected or it will cycle between attached/removed Windows event sound.

To avoid any power problems, buy a mains-powered USB hub. Here's an example of one:
http://www.amazon.com/UNITEK-Adapter-Switch-Support-Windows/dp/B00EHDJZHK

 

[vertical1]

Insufficient power won't damage the drive - - it just won't work (it won't be detected or it will cycle between attached/removed Windows event sound.

To avoid any power problems, buy a mains-powered USB hub. Here's an example of one:
http://www.amazon.com/UNITEK-Adapter-Switch-Support-Windows/dp/B00EHDJZHK

Thanks a lot phillip.
actually i'm using it since 2 months ago & no error or problem happened since then.
but i was just wondering about difference between power consumption & provided power, and rest of questions (1, 2, 3).