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. Overview
The Expansion Unit provides the functions as listed below.
Ref Component Description
Battery pack (
) Provides additional battery power to your computer.
Optical disc drive Accepts an optical disc.
PCI or PCIe slot Inside is the PCI or PCIe expansion slot depending on your
model.
Each slot supports 25 W power.
PCI Revision 2.0
PCI Express 3.0 (PCIe Gen 3)
Slot 1: PCI Express x8 lanes
Slot 2: PCI Express x1 lane
You can install up to two add-on cards. For information on
installing an add-card card, see Section 4.
Battery pack (
) Provides additional battery power to your computer.
Slot 2
Slot 1
Slot 2
Slot 1
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