DVI-D cables

[DarkStar]

With my new computer I also invested in a 22" monitor. At the moment I have it connected to the computer with the analog cable. With the monitor I received an 18 pin single link cable and I have a 24 pin dual link cable. Both the monitor and computer have 24 pin connectors so I intend using my 24 pin cable as this should give the better picture. However, the 18 pin cable supplied with the monitor has barrel shaped 'devices' at each end close to the connectors, the 24 pin does not.
So, what are those barrel shaped objects and why would the 24 pin cable not have them.
And the point of my post, can I safely use the 24 pin cable that has not got these barrel shaped devices.
Sorry if this seems a dim question but I have often wondered what these barrel shaped bits are but never seem to have been able to find out.

[Lance]

I think what you are refering to is the little screw-in connectors? If so, their only purpose is to stop the cable from being accidently knocked or pulled out.

[DarkStar]

A couple of pictures, one has these 'barrels' an inch or so behind the connector incorporated into the cable.

[DorsetBoy]

The "barrels" look like magnets to prevent interference.

http://www.wonderquest.com/rf-stopper.htm

Here we go, you can buy packs of these for your PC / router leads to kill RF issues.

http://www.maplin.co.uk/Module.aspx?ModuleNo=32792


http://www.maplin.co.uk/Module.aspx?ModuleNo=32799

[Rik]

I'm with Dorset, they're just ferrite cores to reduce interference pickup.

[Lance]

[DarkStar]

Thanks for those links Dorset, especially the first one - explains all 
Will switch the computer off tonight and change the cables over.

[DorsetBoy]

A pleasure 

[Simon]

I've often wondered what those 'barrels' are myself!  Thanks for asking the question, Ian.