ASUS A55BM-A/USB3 AMD Motherboard
• DIGI+ VRM - Digital power design for the APU
• USB 3.0 Boost 1.7X faster than traditional USB 3.0
• HDMI and DVUI outputs - High Definition Visual Enjoyment
• UEFI BIOS - flexible and easy BIOS interface
• AI Suite II - one stop access to innovative ASUS features
• Superior Components - 100% all solid capacitors and extra durable stainless steel back I/O materials
• Windows 8 ready - assured compatibilityASUS 5X Protection
ASUS motherboards guard your PC with 5X Protection. We use quality components like DIGI+ VRM digital power design for precise APU power on demand, ESD units tested to strict standards that eliminate electrostatic interference, and resettable fuses around DRAM slots to prevent overcurrent and short-circuit damage. We also use corrosion-resistant back I/O shields, all examples of ASUS providing the best possible reliability and durability.
Voltage regulator modules (VRMs) are among the most essential motherboard components. A good VRM intelligently delivers APU power based on actual needs at any given time. ASUS was first with digital power design featuring faster sensing and response to deliver precise APU power on demand. This great accuracy reduces energy waste and of course improves system stability thanks to more consistent delivery.
Enhanced DRAM Overcurrent Protection
Onboard resettable fuses prevent overcurrent and short-circuit damage. This extends beyond I/O ports to DRAM to safeguard system and device lifespan.
Electrostatic discharges (ESD) can happen suddenly, and their damaging effects are often underestimated. ASUS ESD Guards offer an active protective circuit design that ensures electrostatic discharges are properly grounded, providing greater component longevity.
High-Quality 5K-Hour Solid State Capacitors
ASUS high-quality solid state capacitors assure a 5,000-hour lifespan, equivalent to 2.5 times longer than traditional capacitors. All capacitors pass testing under temperatures as high as 105 degrees centigrade and meet Japanese industrial standards to provide excellent durability and enhanced thermal capacity.
Stainless Steel Back I/O
ASUS motherboard back I/O panels are made from strong and corrosion-resistant stainless steel, which is bonded with a thin layer of chromium oxide to enhance anti-corrosive properties. Passing 72-hour spray salt endurance tests, ASUS stainless steel back I/O panels have a usage life three times longer compared to ordinary panels.
New UEFI BIOS
Media-renowned UEFI BIOS from ASUS provides the smoothest mouse-controlled graphical BIOS, and now features more intuitive functions to quickly take you to favourite BIOS pages and frequently-accessed settings through custom shortcuts. You can even write quick notes in-BIOS for future reference, view an activity log of setting changes and modifications, and rename SATA ports. EZ Mode has a whole new look, upgraded with extra-friendly capabilities like detailed fan controls, D.O.C.P profile settings, SATA information, and fast clock adjustment. Together, these perfect your BIOS experience.
USB 3.0 Boost (UASP Support)
ASUS USB 3.0 Boost technology supports UASP (USB Attached SCSI Protocol) in Windows 8. With USB 3.0 Boost technology, a USB device's transmission speed is significantly increased up to 170%, adding to already fast USB 3.0 performance. ASUS software automatically accelerates data rates for compatible USB 3.0 peripherals without any user interaction.
• World’s 1st USB 3.0 UASP support – instantly 170% faster
• Complete USB 3.0 solution – performance boost under Turbo Mode or UASP Mode for most USB devices
• Simple plug and boost – auto detection design ensures best performance
Press the Q-Slot clip lightly, and graphics cards just pop out. The large winged clip is easy to reach so you don’t have to struggle with installing or removing even the biggest graphics cards.
ASUS Boot Setting
Thanks to ASUS Windows 8 hardware optimization, ASUS Boot Setting provides better flexibility in customizing your PC’s startup process. You can shorten system boot-up time to 2-seconds* for a smoother user experience under Windows 8, and even previous versions of Windows. Also, you can enter the BIOS directly with one click through a user-friendly interface, and quickly select your preferred system boot up method: either get to the OS in seconds or opt for regular boot up. Whatever your choice, settings are saved and persistent, with no need to choose every time you power on.
AI Suite 3
ASUS AI Suite 3 offers a brand new user experience through a clearer and more attractive interface with support for larger monitors. It consolidates all exclusive ASUS features into one simple-to-use package, allowing you to supervise overclocking, energy consumption, fan speeds, voltages and more. This all-in-one app offers diverse and easy to use functionality, with no need to switch back and forth between different utilities.
AMD® Dual Graphics Technology
AMD Radeon™ Dual Graphics is an exclusive technology only available to AMD platforms. It allows AMD APUs and selected AMD Radeon™ HD 6000 series graphics cards to work together, delivering an unrivalled 3D gaming graphics quality and performance. By combining both the discrete and integrated graphics processors, gamers can now enjoy faster and smoother frame rates on any latest gaming titles.
APU and Chipset Features
This motherboard supports AMD® A-series Accelerated Processor with AMD Radeon™ HD 7000/8000 Series Graphics. This revolutionary APU (Accelerated Processing Unit) combines processing power and advanced DirectX 11 graphics in one small, energy-efficient design to enable accelerated performance and an industry-leading visual experience. It features Dual-channel DDR3 memory support and accelerates data transfer rate up to 5GT/s
AMD® A55 FCH (Hudson D2) is designed to support up to 5GT/s interface speed and PCI Express™ 2.0 graphics. It supports 6 x SATA 3Gb/s ports.
||AMD Socket FM2+ Athlon™/A- Series Processors
Supports CPU up to 4 cores
Supports AMD® Turbo Core 3.0 Technology
||AMD A55 FCH (Hudson D2)
||2 x DIMM, Max. 32GB, DDR3 2133/1866/1600/1333 MHz Non-ECC, Un-buffered Memory
Dual Channel Memory Architecture
Support AMD Memory Profile (AMP) memory
||Integrated AMD Radeon™ HD 7000/8000 Series Graphics in A-series APU
Multi-VGA output support : HDMI/DVI/RGB ports
Supports HDMI with max. resolution 1920 x 1200 @ 60 Hz
Supports DVI with max. resolution 2560 x 1600 @ 60 Hz
Supports RGB with max. resolution 1920 x 1600 @ 60 Hz
Maximum shared memory of 2048 MB
AMD® Dual Graphics technology support
||1 x PCIe 3.0/2.0 x16
1 x PCIe 2.0 x1
1 x PCI
||AMD A55 FCH (Hudson D2) chipset :
6 x SATA 3Gb/s port(s), dark brown
Support Raid 0, 1, 10, JBOD
||Realtek® 8111G, 1 x Gigabit LAN Controller(s)
||Realtek® ALC887-VD 8-Channel High Definition Audio CODEC
Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking
||ASMedia® ASM1042 controller :
2 x USB 3.0/2.0 port(s) (2 at back panel, blue)
AMD A55 FCH (Hudson D2) chipset :
6 x USB 2.0/1.1 port(s) (2 at back panel, black, 4 at mid-board)
||ASUS 5X Protection :
ASUS DIGI+ VRM - 3 + 1 Phase digital power design
ASUS Enhanced DRAM Overcurrent Protection - Short circuit damage prevention
ASUS ESD Guards - Enhanced ESD protection
ASUS High-Quality 5K-Hour Solid Capacitors - 2.5x long lifespan with excellent durability
ASUS Stainless Steel Back I/O - 3x more durable corrosion-resistant coating
ASUS EPU :
ASUS Exclusive Features :
AI Suite 3
ASUS UEFI BIOS EZ Mode featuring friendly graphics user interface
USB 3.0 Boost
ASUS Quiet Thermal Solution :
Stylish Fanless Design Heat-sink solution
ASUS Fan Xpert
ASUS EZ DIY :
ASUS CrashFree BIOS 3
ASUS EZ Flash 2
ASUS MyLogo 2
ASUS Q-Design :
|Operating System Support
||Windows® 8 , 32bit/64bit
Windows® 7 , 32bit/64bit
Windows® Vista , 32bit/64bit
Windows® XP , 32bit
|Back I/O Ports
||1 x PS/2 keyboard (purple)
1 x PS/2 mouse (green)
1 x DVI
1 x D-Sub
1 x HDMI
1 x LAN (RJ45) port(s)
2 x USB 3.0
2 x USB 2.0
3 x Audio jack(s)
||2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
1 x COM port(s) connector(s)
6 x SATA 3Gb/s connector(s)
1 x CPU Fan connector(s)
1 x Chassis Fan connector(s)
1 x S/PDIF out header(s)
1 x 24-pin EATX Power connector(s)
1 x 4-pin ATX 12V Power connector(s)
1 x Front panel audio connector(s) (AAFP)
1 x System panel(s)
2 x SATA 3Gb/s cable(s)
||64 Mb Flash ROM, UEFI AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.6, ACPI 4.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3, My Favorites, Quick Note, Last Modified log, F12 PrintScreen, F3 Shortcut functions and ASUS DRAM SPD (Serial Presence Detect) memory information
Anti-virus software (OEM version)
||mATX Form Factor
8.9 inch x 7.2 inch ( 22.6 cm x 18.3 cm )
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