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HP and Compaq Desktop PCs - Motherboard Specifications, (Carmel)

Figure 1: The Carmel motherboard

Photograph of motherboard

Motherboard description

  • Manufacturer's motherboard name: Pegatron

  • HP/Compaq name: Carmel

Form Factor

  • uATX: 24.4 cm (9.6 inches) x 24.4 cm (9.6 inches)


  • Intel H61

Front-side bus speed

  • Up to 2.5 GT/s

Processor upgrade information

  • Socket type: LGA 1155

  • Motherboard supports the following processor upgrades

    • Core i7-2600S 65W

    • Core i5-2xxx 65W

    • Core i3-2xxx 65W

Memory upgrade information

  • Single channel memory architecture

  • Two 240-pin DDR3 DIMM sockets

  • Supports the following:

    • PC3-8500 (DDR3-1066)

    • PC3-10600 (DDR3-1333)

  • Non-ECC memory only, unbuffered

  • Supports 1 GB, 2 GB, and 4 GB DIMMs

  • Supports up to 4 GB on 32-bit* systems

  • Supports up to 8 GB on 64-bit systems

NOTE: 32-bit systems cannot address a full 4.0 GB of memory


Intel Graphics Media Accelerator HD Integrated graphics

*Integrated video is not available if a graphics card is installed.

  • Supports PCI Express x16 graphics cards

  • VGA out port


Integrated Realtek ALC656 Audio

*Integrated audio is not available if a sound card is installed.

  • Built-in High Definition 6 channel audio

  • Audio jack sensing

  • Realtek ALC656 CODEC


LAN: 1000-Base-T

  • Interface: Integrated into motherboard

  • Technology: RTL8171EH-CG gigabit ethernet controller

  • Data transfer speeds: up to 10/100/1000 Mb/s

  • Transmission standards: 1000-Base-T Ethernet

Expansion Slots

  • One PCI Express x16

  • Three PCI Express x1

  • One PCI Express Mini Card x1

I/O Ports

Back I/O ports

Figure 2: Back I/O panel

  1. USB: 4

  2. LAN

  3. DVI-D

  4. D-SUB port (VGA port)

  5. Audio: Line in

  6. Audio: Line out

  7. Audio: Microphone

Internal Connectors

  • 1x ATX power connector

  • 1x ATX CPU power connector

  • 1x CPU fan connector

  • 1x System fan connector

  • 4x SATA connectors

  • 10x USB connectors

  • 1x Internal SPDIF output connector

  • 1x Front panel audio connector

  • 1x ROM recovery connector

  • 1x Hood_sense connector

  • 1x One touch reset connector

  • 1x One touch recovery connector

  • 1x Front panel connector

Motherboard layout

Figure 3: layout

Clearing the CMOS settings

CAUTION: Do not change any jumper setting while the computer is on. Damage to the motherboard can result.

This motherboard has a jumper to clear the Real Time Clock (RTC) RAM in CMOS.

  1. Turn OFF the computer and unplug the power cord.

  2. Move the jumper to clear for 5 to 10 secs, then move the jumper back to default.

  3. Plug the power cord and turn ON the computer.

  4. On the next startup, enter BIOS setup to re-enter user settings.

Clearing the PASSWORD settings

The BIOS password is used to protect BIOS settings from unwanted changes.

To erase the BIOS password follow these steps:

  1. Turn OFF the computer.

  2. Move the jumper to Clear.

  3. Turn ON the computer to POST screen.

  4. Turn OFF the computer.

  5. Move the jumper to Default.

  6. Enter BIOS setup to verify or configure new settings.

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