True 5.1

[nismoasfuh]

Hey guys, just got my brand new iMac. I have 5.1 Logitech with the 3 optical cables. Black,green,orange. But iMac has only one port. I cane across this:
http://item.mobileweb.ebay.com/viewitem?itemId=280948392076
Will this work for me in combination with the toslink for true surround sound from my 5.1 speakers?

 

[blueroom]

I've got a similar unit. Works great. You'll need a miniplug to TOSLINK cable.

 

[nismoasfuh]

Right! A mini plug to a toslink. What brand do you have?

 

[nismoasfuh]

Edit:mistake