![](http://pdfasset.owneriq.net/4/1b/41bded7d-1a43-40fe-a71a-d3431446eab3/41bded7d-1a43-40fe-a71a-d3431446eab3-bg26.png)
Item Description Spare part number
Secondary hard drive system connector board (required for installation of secondary hard
drive)
495028-001
(3) Optical drive
DVD-ROM Drive 492558-001
DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive 492559-001
30 Chapter 3 Illustrated parts catalog