Jump to content

HP Pavilion a400n Desktop PC Product Specifications

  • PrintPrint

Product introduction date


Country/region sold in

  • United States
  • Canada

Product number



Base processor

Intel Celeron 2.7 GHz:
  • 400 MHz front side bus
  • Socket mPGA478



Motherboard manufacturer


Memory installed256 MB (1 x 256)
Maximum allowed1 GB (2 x 512 MB)
Speed supportedPC2700 MB/sec (messages at PC2100) requires the replacement of the installed 256 MB DIMM
Type184 pin, DDR SDRAM
DIMM slotsTwo


  • Level 1: 128 KB
  • Level 2: 512 KB

Hard drive

  • 80 GB Ultra DMA
  • 7200 rpm

DVD drive

16X maximum speed

CD-RW drive

48x/24x/48 maximum speed: 48 write, 24 re-write, 48 read

Diskette drive

1.44 MB (3.5-inch)


ItU V.92 K56flex

Video graphics

Integrated graphics with up to 64 MB shared memory for video


  • Integrated AC97 audio
  • Six channel audio configurable

Network (LAN)

Integrated 10/100Base-T networking interface


MPEG2 for full-motion digital video

7-in-1 card

7-in-1 digital media card reader supports the following cards:
  • Compact Flash I/II
  • SmartMedia
  • Memory Stick
  • Memory Stick Pro
  • MultiMediaCard
  • Secure Digital (SD)
  • IBM Micro Drive

External I/O ports

I/O ports on the front panel
Port typeQuantity
USB (2.0)One
IEEE 1394One
7-in-1 media card readerOne card with four slots
I/O ports on the back panel
Port typeQuantity
USB (2.0)Four
IEEE 1394One
AudioOne each (line-in, line-out, microphone)
VGA (monitor)One
PS/2 (keyboard, mouse)Two

Expansion slots (total)

Slot typeQuantity
PCIThree (two available)
DIMMTwo (one available)

Drive bays (total)

Bay typeQuantity
5.25-inch, externalTwo (both occupied)
3.5-inch, externalTwo (both occupied)
3.5-inch, internalTwo (one available)

Keyboard and mouse

  • HP PS/2 Internet keyboard
  • Quebec keyboard Kit (French Canada only)
  • HP PS/2 scroller mouse

Physical specifications

  • Packaged product: 11.75 x 19.5 x 24 inches (H x W x D)
  • Unpacked product: 7.5 x 15.2 x 16.5 inches
  • Packaged weight: 38 pounds


Key to software:
  • cd/dvd = media included in box
  • eng = English only, even in French Canada
  • fc = only available in French Canada
  • nfc = not available in French Canada
Software titles that shipped with PC
Software categorySoftware title
Operating SystemMicrosoft Windows XP Home Edition
  • RecordNow 6.5
  • WinDVD SE 4.0 (with optional 5.1 upgrade)
Entertainment, Music, and Games
  • MusicMatch Jukebox 8.0 (nfc)
  • MusicMatch Jukebox 7.1 (fc)
  • RealOne Player
  • Wild Tangent Game Channel (nfc)
  • Microsoft Plus Digital Media Edition (nfc)
  • ATI multimedia cent applications (CD/DVD) (nfc)
Imaging, Photography, Video, and Film
  • HP Organize (nfc)
  • HP Image Zone Plus
  • ArcDoft ShowBiz 2 (IEEE 1394)
Education and Reference
  • MSN Encarta Plus (nfc)
  • Encarta Encyclopedia 2004 Standard Edition (cd/dvd) (fc)
Productivity and Finance
  • Adobe Acrobat Reader
  • Microsoft Money 2004 (cd/dvd) (nfc)
  • Microsoft Office Student and Teacher Edition (60-day trial) and Works 7.0 (cd/dvd)
  • Quicken New User Edition 2004 (nfc)
  • TurboTax 2003 offer desktop icon
  • myhpclub (nfc)
HP Recovery
  • Microsoft System Restore
  • Software Repair Wizard
  • Recovery Software Suite:
    • System Recovery program
    • Application Recovery program
    • Recovery Tools CD
    • Recovery CD/DVD Creator
Service and Support
  • Backweb Client
  • Help & Support center (fc)
  • Help & Support Center/HP Instant Support (nfc)
  • Safety and Comfort Guide
  • Desktop Web-based registration
PC Security
  • Norton AntiVirus 2004
  • Norton Personal Firewall 2003
  • Security and backup splash page (nfc)
Utility, Maintenance, and Performance
  • 7-in-1 card reader utility
  • PC Doctor
  • Owner services icon and HTML page
ISP Signup
  • Easy Internet Signup
  • AOL
  • MSN 8.0 (nfc)
  • Yahoo (nfc)
  • DigiTerra (nfc)
  • CompuServe (nfc)


Standard warranty included with purchase
Warranty typeWarranty duration
Parts and LaborOne year from date of purchase
Hardware TroubleshootingOne year from date of purchase

24 hour/7 days a week
Software Application Support30 days (upgraded to 90 days upon PC registration)

24 hour/7 days a week
Software Defective Media Replacement30 days (on media shipped in the box)
Self Repair (kits)One year from date of purchase
Return to HP or to an Authorized Service ProviderOne year from date of purchase

HP Support forums

Find solutions and collaborate with others on the HP Support Forum
HP.comHP on FacebookHP on TwitterHP on YouTubeHP on Linked InHP on FlickrHP on Google+