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Green rectangular micro-ATX motherboard with silver CPU socket, two black DIMM slots, blue PCIe x16 and white PCI slots

ASUS

ASUS P7H55-M LX Intel motherboard

SKU CH-ZZKP-Z0R1R

Micro ATX board for LGA 1156 CPUs with DDR3 1333/1066, dual-channel memory, one PCIe 2.0 x16 slot, one PCIe x4 slot, two PCI slots, 8-channel audio and Gigabit LAN

  • CPU Socket TypeLGA 1156
  • CPU TypeCore i7 / i5 / i3 / Pentium (LGA1156)
  • ChipsetIntel H55
  • Onboard Video ChipsetNone
  • Number of Memory Slots2x240pin
  • Memory StandardDDR3 1333/1066
  • Supports Core i7, i5, i3 and Pentium CPUs on LGA 1156 socket
  • Dual-channel DDR3 memory up to 1333 MHz with 8 GB maximum capacity
  • Intel H55 chipset provides integrated graphics output via D-Sub and DVI ports
  • Eight-channel audio with VIA VT1708S codec for surround sound
  • Gigabit LAN using Realtek 8112L controller for wired networking

ASUS P7H55-M LX LGA 1156 motherboard

This micro-ATX board uses the Intel H55 chipset and accepts Core i7, i5, i3 and Pentium processors in an LGA 1156 socket. It provides two 240-pin DDR3 slots running at 1333 or 1066 MHz with dual-channel support up to 8 GB. A single PCI Express 2.0 x16 slot, one PCI Express x4 slot and two legacy PCI slots handle expansion.

Who this suits and who should look elsewhere

Builders upgrading an existing LGA 1156 system or assembling a basic office PC will find the feature set adequate. The lack of onboard graphics means a discrete video card is mandatory, so systems relying on integrated output cannot use this board. Enthusiasts needing more than two memory slots or newer CPU generations must choose a different platform.

Checks before ordering

Verify that your processor is an LGA 1156 Core i7, i5, i3 or Pentium model and that your cooler fits the socket mounting holes. Confirm the power supply provides the required 24-pin ATX and 4-pin CPU connectors for this board. Ensure your case accepts micro-ATX dimensions and that a graphics card is available for the D-Sub and DVI video outputs.

Highlights

  • Supports Core i7, i5, i3 and Pentium CPUs on LGA 1156 socket
  • Dual-channel DDR3 memory up to 1333 MHz with 8 GB maximum capacity
  • Intel H55 chipset provides integrated graphics output via D-Sub and DVI ports
  • Eight-channel audio with VIA VT1708S codec for surround sound
  • Gigabit LAN using Realtek 8112L controller for wired networking

Specifications

BrandASUS
ModelP7H55-M LX
CPU Socket TypeLGA 1156
CPU TypeCore i7 / i5 / i3 / Pentium (LGA1156)
ChipsetIntel H55
Onboard Video ChipsetNone
Number of Memory Slots2x240pin
Memory StandardDDR3 1333/1066
Maximum Memory Supported8GB
Channel SupportedDual Channel
PCI Express 2.0 x161 x PCI Express 2.0 x16
PCI Express x41 x PCI Express x4
PCI Slots2 x PCI Slots
Audio ChipsetVIA VT1708S
Audio Channels8 Channels
LAN ChipsetRealtek 8112L
Max LAN Speed1Gbps
Back I/O Ports2 x PS/2 / 6 x USB 2.0/1.1
PS/22
Video PortsD-Sub + DVI
USB 1.1/2.06 x USB 2.0
Audio Ports3 Ports
Onboard USB6 x USB 2.0
Form FactorMicro ATX
Dimensions (W x L)9.6" x 8.6"
Power Pin24 Pin
FeaturesAnti-Surge Protection: Full-time power guardian to safeguard your motherboard from over-voltageASUS Q-Fan2: Quiet, cool and efficient operationLegacy Features: Maximum expansion and flexible connectivity

Questions about this item

Do I need a separate graphics card because the ASUS P7H55-M LX has no onboard video chipset?

Yes, the board has no onboard video chipset, so a discrete graphics card is required for any display output. The back panel provides D-Sub and DVI ports that connect to the installed card.

Can I keep my existing PCI sound card and use it with the PCI Express x4 slot on this motherboard?

No, the PCI Express x4 slot accepts only PCIe devices. The board does include two legacy PCI slots, so a PCI sound card can be installed in one of those instead.

How can I confirm the board is running memory in dual-channel mode after installing two DDR3 1333 modules?

Enter the BIOS and verify the memory configuration shows dual-channel operation, or use a system-information utility in the OS that reports the active channel mode.

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