That means used on different Systems and as such NTFS isn't suitable for Cross Platform Work.
You can format this HDD to NTFS but you will be restricted to using it only on compatible Computers that can read the NTFS Partitions. To do this you can either chose to plug it into your NB open My Computer right click on this 2 TB Drive and in the drop Down List chose Format or you could use the Convert Command from the Run Box if you have a suitable system.
The only thing I'm not sure about is this bit of your question
[i]Or can I connect the 2TB Ext HD to my router[/i]
As I don't know what you are using as a Router here I can only say that the majority of these Do not support USB Devices like External HDD's so I'm not quite sure what you are attempting to do here.
You can use it connected to your Computer most defiantly but depending how you want to fit it as a Network Storage Device you may not be able to perform this.
As it is a USB Enclosure you also should realize that these are not meant to be run all of the time but are designed to be Part Use Only as the USB Enclosures do not allow the HDD inside the enclosure to keep cool enough or adequately protect the enclosed drive from damage from shocks or other vibration either. These type of enclosures cause a HDD that is used all of the time to die far sooner than it should normally from overheating but they can also fail as a result of a bump or other type of knock.
If you require 24/7 use of this you should fit a NAT Device to the system these are far better for the HDD's and your Data Security as well as expandable when required.
Col
