HP ProBook 450 G2 Notebook PC HP ProBook 455 G2 Notebook PC Maintenance and Service Guide

Category Description HP 450
UMA
HP 450
discrete
HP 455
UMA
HP 455
discrete
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8192 MB (4096 × 2; dual channel)
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6144 MB (4096 + 2048; dual channel)
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4096 MB (4096 × 1)
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2048 MB (2048 × 1)
Primary storage Supports 7-mm/9.5-mm, 2.5-in SATA hard drives with HP
3D DriveGuard
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Customer-accessible 
Supports the following drives:
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1.5-TB, 5400-rpm
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1-TB, 5400-rpm
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750-GB, 7200-rpm
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750-GB, 5400-rpm
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500-GB, 7200-rpm
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500-GB, 5400-rpm
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500-GB, 5400-rpm, hybrid (8-GB SSD) MLC
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320-GB, 5400-rpm
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128-GB Solid-state drive (SSD)

Supports the following drives:
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1.5-TB, 5400-rpm
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1-TB, 5400-rpm
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750-GB, 5400-rpm
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500-GB, 7200-rpm
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500-GB, 5400-rpm
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320-GB, 5400-rpm
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128-GB Solid-state drive (SSD)
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Mini-card SSD M.2 2242 SSD
120 GB
Set as primary storage if selected. Not available with
Celeron or Pentium processors. Not available with WWAN.
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Fixed optical drives Supports the following 9.5-mm SATA optical drives:
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DVD-ROM
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DVD+/-RW SuperMulti DL
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Blu-ray ROM DVD+/-RW SuperMulti DL 
Supports no optical drive option 
Audio/Visual Integrated camera (720p HD) 
Stereo speakers (2) 
3