OK. FYI: When you buy the Screen assembly, it only comes with one connector cable, the one shown in this correct model screen assembly on the picture Jamie uploaded. The Ribbon cable to the new Screen ''Display port lcd cable'', 98% of the time does not come with the new Screen you order and must be purchased separately only IF, your existing one is damaged. Ask the seller if they send it with the replacement screen so you are aware if to order one!
One more detail! You will need new mounting adhesive tape to reassemble your new Screen! You must buy a new set or ask the seller if they send an adhesive kit with the screen they are selling you!
This will save you time after your get the screen, so you don't have to wait again for just the Adhesive to arrive, to complete your installation!
If the existing Display port lcd cable on your existing screen is OK, you can just swap the old screen Display port lcd cable to the new Screen Assembly!
See This interchangeable ribbon Display port lcd cable here below!
[http://www.bomboscomputerrepair.com/image_files/imac%20A1419%20DisplayPort%20LCD%20Cable.jpg|The 2nd connector, the Display Ribbon!]
Hope this saves reader's time/delays, money and troubles!