HP C4392-90100 - Manual (Page 27)

1-18 Installing a CD-Writer Plus in an Empty Drive Bay
18A. Secure the drive into the bay, using the screws included with your drive
or any M3x0.5x6mm metric screw. (Do not use a screw longer than 6
mm.)
If your computer uses rails or mounting brackets (see step 5) you may not
need screws to secure the rails in the bay.
Use all four screws
2
3
4
1