P55H-CM (V1.0)
ECS P55H-CM motherboard support the Intel® LGA 1156 for Core™ i7 and Core™ i5 Processors
ECS P55H-CM features Intel® innovative 2-chip architecture to provide great performance with Intel® LGA1156 for Core™ i7 & Core™ i5 processors and support Dual channel DDR3 1333 memory. Equipped with Intel Giga Lan chipset and PCI-E x 16 Gen 2.0 interface. P55H-CM is the best choice for your computing experience.

Related Links :

 Durathon2 Technology - Motherboard quality you can trust.

When it comes to the quality and durability of your motherboard, ECS goes above and beyond industry standards to ensure that you have a motherboard that will last long and always continue to out perform the competition. Trust only motherboards built with Durathon Technology. Click " Durathon microsite" for more details.

eBLU BIOS Live Update Utility

Save time and hassle of searching for BIOS online and avoid complicated flashing steps.
‧Time-saving‧Smart and easy‧Safe and secure‧Free and upgradable

See details
 Motherboard Intelligent BIOS II (M.I.B II)

Motherboard Intelligent BIOS II (M.I.B II) M.B.I II integrated all the overclocking functions into one page. Providing the most intelligent and convenient way to adjust the clock/ voltage settings of CPU and memory and get the extra performance in advanced.

  LGA 1156 Core i7
Supports the Intel® Core i7 Processors in the LGA1156 package. Applying processing power where it's needed most with faster, intelligent, multi-core technology, and delivering an incredible breakthrough in PC performance.
  LGA 1156 Core i5
Supports the Intel Core i5 Processors in the LGA1156 package. Accelerating in response to demanding tasks, such as playing games and editing photos with intelligent performance, and moving faster when you do.
  LGA 1156 Core i3
Supports the Intel Core i3 Processors in the LGA1156 package. This family equipped with Intel® HD Graphics is the perfect entry point for a fast, responsive PC experience.
  LGA 1156
Supports LGA 1156 CPU-socket interface in the single chipset structure and will supersede LGA775 in the high-end and performance desktop segments. It can tune your system for extra performance and feed your need for speed.
  Dual Channel DDR3 1333(OC)
Doubles the bandwidth of your system memory up to 21.0GB/s and pumps up the system performance at lower power.
The exceptionally increased interconnect bit rate from 2.5GT/s up to 5.0GT/s would effectively eliminates the bottle neck of the system performance and brings the most terrific computing experience from the present to the future.
  SATA 3.0Gb/s
Doubles the transfer speed of SATA, running at speed up to 3.0Gb/s, and fully compatible with the soon-to-be-released SATA HDD, CD-ROM and other cutting-edge devices with NCQ function support.
  RAID 0, 1, 5, 10
Supports RAID 0(Striped disk array), RAID 1(Mirroring disk array), RAID 5(Block Interleaved Distributed Parity), RAID 10 (A Stripe of Mirrors). Provides users the performance and protection.
  6 Channel High Definition Audio
Integrated 6-channel HD Audio CODEC delivering advanced multi-channel audio and bringing you the experience of home theater-quality sound.
  Gigabit LAN
Delivers transfer speed ten times faster than conventional 10/ 100 Ethernet connections, supporting a high transfer rate up to Gigabit/s. Gigabit LAN is the networking standards for the future and is ideal for handing large amount of data such as video, audio, and voice.
  USB 2.0
The latest connectivity standard which delivers transfer speeds up to 480Mb/s for easy connectivity and ultra-fast data transfers.
  eBLU - BIOS Live Update Utility
ECS eBLU utility makes updating BIOS fast and easy. eBLU saves time and hassle of searching for BIOS online and avoid complicated flashing steps. With simple and easy steps it checks for new BIOS version on-line and safely guides the user to flash the system BIOS.
  eDLU - Drivers Live Update Utility
ECS eDLU utility makes updating Drivers fast and easy. eDLU Saves time and hassle of searching for Drivers online and avoid complicated steps. With simple and easy steps it checks for new Drivers version on-line and let the user to update the Drivers.
  Norton™ Internet Security
Simple, Easy-to-Use Interface, delivers fast and comprehensive online threat protection, guarding your PC, network, without slowing you down. Giving you greater insight into downloaded applications, whether they can be trusted, and how they may impact your PC’s resources and performance Offering users a safer and more convenient environment than ever.ECS recommends the immediate installation of Norton Internet Security of your computer.
  Certified For Windows® 7
Windows® 7 platform introduces a number of manageability improvements that can reduce total cost of ownership by helping to increase automation, improve user productivity, and provide flexible administrative control to meet compliance requirements. It is more user-friendly and has been optimized to consume less system resources with Windows® 7 as well. Furthermore, the VT technology is enhanced to support real-time multimedia application including video playback and 3D games.
  Certified For Windows Vista
The latest generation Microsoft O.S., delivers better personal productivity and digital entertainment on your PC through its improved reliability, security, and performance.
Choose an environment-friendly, fully RoHS-compliant ECS product as the foundation for keeping harmful substances out of our ecosystem.
CPUº Support the Intel® LGA1156 Core™ i7 and Intel® Core™ i5 processors
CHIPSETº Featuring the Intel® P55 Express Chipset
MEMORYº Dual-channel DDR3 memory architecture
º 4 x 240-pin DDR3 DIMM socket support up to 16GB
º Support DDR3 1333/1066/800 SDRAM
Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows® 32-bit OS.
For Windows® 64-bit OS with 64-bit CPU, there is no such limitation

EXPANSION SLOTº 1 x PCI Express x16 slot
º 2 x PCI Express x1 slots
º 1 x PCI slot
STORAGEº Support by Intel® P55
    • 6 x Serial ATA 3.0Gb/s devices
    • RAID0, RAID1, RAID5, RAID 10 configuration
AUDIOº Realtek ALC662 6-channel HD Audio codec (Realtek ALC888 8-channel HD Audio codec optional)
º 6 Channel High Definition Audio (Realtek ALC662 or VIA VT1708B)
LANº Intel® 82578 Gigabit Lan Controller
REAR PANEL I/Oº 1 x PS/2 keyboard & PS/2 mouse connectors
º 6 x USB 2.0 ports
º 1 x RJ45 LAN connector
º 1 x Audio port
º 1 x LPT port
INTERNAL I/O CONNECTORS & HEADERSº 1 x 24-pin ATX Power Supply connector
º 1 x CPU_FAN connector
º 1 x SYS Fan header
º 1 x FDD connector
º 1 x PWR_FAN connector
º 6 x Serial ATA 3Gb/s connectors
º 1 x Buzzer
º 1 x Front panel switch/LED header
º 1 x 4-pin ATX 12V connector
º 2 x COM headers
º 1 x Front panel audio header
º 3 x USB 2.0 headers support additional 6 USB ports
º Supports Plug and Play, STR (S3) / STD (S4) , Hardware monitor, Multi Boot
º Supports ACPI & DMI
º Audio, LAN, can be disabled in BIOS
º F11 hot key for boot up devices option
º Supports Page Up clear CMOS Hotkey
º Supports ACPI 3.0 & DMI
FORM FACTORº Micro-ATX Size, 244mm*244mm

 Driver Download

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Please read the notes carefully before updating BIOS.
1.Do not update the BIOS if the system is running fine. Unsuccessful BIOS flash may cause the system fails to boot up. The manufacturer is not responsible for any BIOS flash failure.
2.Make sure your M/B PCB version number first, and then read the updated description & special note carefully to check if the new BIOS version patch pertain to your current problem.
(How to recognize the M/B PCB version)
3.Please DO NOT reboot system,unplug power supply and remove battery during BIOS update process.
4.It is recommended to use the updated flash utility included in each BIOS download package.
(How to use flash utility).
OS ID NOProduct Line
Windows Vista Home Premium1358244Motherboard
Windows 7 32 bit1358256Motherboard

System reports 8GB(3.99GB usable) at 64bit OS with 8GB(2GB*4pcs)memory installed. And "Memory Remap Feature" is "enabled" under Advance Chipset of BIOS. 

Please make sure that you exact follow the instruction of the manual for plugging the memory modules in order first as defined by Intel.

The possible reasons may cause the memory size half reduction are, 
Memory Remap Feature need to be enabled for 64bit OS.
2.  Memory module not well installed on DIMM slot. 

The network connection links down randomly and intermittently, how do I fix it? 

If you have got chance being encountered below symptom in a network environment with some certain hubs/switches , please check following solution for this symptom with Intel® 82578DC Gigabit Ethernet PHY.

Network connection links down randomly and intermittently. Connection icon will be disabled and pop up a message, “A network cable is unplugged” at the right bottom corner like Windows XP. The symptom just appears in a short time then link up again soon.

1. Set the "Speed and Duplex" to fix according to hubs/swtich supported.
2. Suggest user upgrade Intel LAN driver to version 16.5.

- Intel LAN driver download,

- Symptom,

- Set the "Speed and Duplex" as "100 Mbps Full Duplex" as an example.

* means validated by ECS at time of writing. Changes to component or CPU may produce a different outcome. The result shown is for reference only and is subject to change w/o notification.

SocketFamilyProcessorWattageFrequencyCacheSteppingSince BIOS
LGA1156Intel Core™ i7860 (B1) (95W)N/A2.80 GHz8MBN/A08/06/2010
LGA1156Intel Core™ i7860s (B1) (82W)N/A2.53 GHz8MBN/A08/06/2010
LGA1156Intel Core™ i7870 (B1) (95W)N/A2.93 GHz8MBN/A08/06/2010
LGA1156Intel Core™ i7875K(B1)(95W)N/A2.93GHz8MBN/A08/06/2010
LGA1156Intel Core™ i7880(B1)(95W)N/A3.06GHz8MBN/A08/06/2010
LGA1156Intel Core™ i5650 (C2) (73W)N/A3.20 GHz4MBN/A08/06/2010
LGA1156Intel Core™ i5650 (K0) (73W)N/A3.20GHz4MBN/A08/06/2010
LGA1156Intel Core™ i5655K(K0)(73W)N/A3.20GHz4MBN/A08/06/2010
LGA1156Intel Core™ i5660 (C2) (73W)N/A3.33 GHz4MBN/A08/06/2010
LGA1156Intel Core™ i5660 (K0) (73W)N/A3.33GHz4MBN/A08/06/2010
LGA1156Intel Core™ i5661 (C2) (87W)N/A3.33 GHz4MBN/A08/06/2010
LGA1156Intel Core™ i5661 (K0) (87W)N/A3.33GHz4MBN/A08/06/2010
LGA1156Intel Core™ i5670 (C2) (73W)N/A3.46 GHz4MBN/A08/06/2010
LGA1156Intel Core™ i5670 (K0) (73W)N/A3.46GHz4MBN/A08/06/2010
LGA1156Intel Core™ i5680(K0)(73W)N/A3.60GHz4MBN/A08/06/2010
LGA1156Intel Core™ i5750 (B1) (95W)N/A2.66 GHz8MBN/A08/06/2010
LGA1156Intel Core™ i5750s (B1) (82W)N/A2.40 GHz8MBN/A08/06/2010
LGA1156Intel Core™ i5760 (B1) (95W)N/A2.80GHz8MBN/A08/06/2010
LGA1156Intel Core™ i3530 (C2) (73W)N/A2.93 GHz4MBN/A08/06/2010
LGA1156Intel Core™ i3530 (K0) (73W)N/A2.93GHz4MBN/A08/06/2010
LGA1156Intel Core™ i3540 (C2) (73W)N/A3.06 GHz4MBN/A08/06/2010
LGA1156Intel Core™ i3540 (K0) (73W)N/A3.06GHz4MBN/A08/06/2010
LGA1156Intel Core™ i3550(K0)(73W)N/A3.20GHz4MBN/A08/06/2010
LGA1156Intel Core™ i3560(K0)(73W)N/A3.33 GHz4MBN/A08/06/2010
LGA1156Intel PentiumG6950 (C2) (73W)N/A2.80 GHz3MBN/A08/06/2010

All memory modules on Qualified Vendors List (QVL) have been tested and qualified for use with this motherboard.
Click to download QVL
Model: P55H-CM
PCB Version: V1.0