Hiper Type-R 580W question

Hi,

I have a question about the Hiper Type-R 580W power supply. I have an Asus P4P800 motherboard. It uses a 20pin and a 4pin ATX+12V. I'm worried that even after I split the 20pin and 4pin power cables, I won't be able to reach the other.

This is how the cable can be split from power supply:
(can that tape at the end be cut??)



Picture of motherboard (It's actually an 'SE', but close enough ):
http://www.asus.com/products.aspx? [...] odelmenu=1

As you can see, the 20pin(white) is right below the RAM slots, while the 4pin(white) is top-left of the heatsink/cpu

- Do you think can I cut the tape at the end of the cable to extend the length of the cable?
- Are there such things as extension cables to 4pin ATX+12V? If so, would I run into fluctuating voltages in the long run? (don't feel good additing extensions to main power)

it's this one btw:


i just noticed that you show a picture from the 480 but the 580 is modular.
the plug for it is this one:

It's like that for compatability to fit for both older and newer model of motherboards power supply which has different number of pin connectors. I have an Aspire 600watt psu but I like the Hyper cuz of its neat design.