COMPLETE KIT AND EFFICIENT, VERY EASY TO INSTALL! EXCELLENT MEANS GIVING LIFE TO YOUR OLD IDE HDD (40GB MAXTOR DIAMONDPLUS IN MY CASE). PERSONALLY, HOW I KEEP WINDOWS XP PERMIT ON THIS HARD TO IDE TO OPERATING AN OLD CANON SCANNER FOR WHICH THE DRIVER FOR WINDOWS 7 DOES NOT EXIST. FOR INFO, WINDOWS 7 IS INSTALLED ON HDD SATA PRINCICPAL. IT IS THEREFORE SUFFICIENT TO CHOOSE ME TO START ON WHICH I WANT boot (WINDOWS 7 OR WINDOWS XP).