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A55BM-A/USB3
Motherboard
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E8663 Second Edition Sept. 2013 Copyright © 2013 ASUSTeK COMPUTER INC. All Rights Reserved. Nopart of this manual, including the products and software described in it, may be reproduced, transmitted,transcribed, stored in a retrieval system, or translated into anylanguage in any form or byany means, except documentation kept by the purchaser for backup purposes, without the express written permissionof ASUSTeK COMPUTER INC. (“ASUS”). Product warranty or service will not b
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Contents Safety information ...................................................................................................... iv About this guide ......................................................................................................... iv Package contents ....................................................................................................... vi A55BM-A/USB3 specifications summary ................................................................. vi Product int
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Safety information Electrical safety • To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. • When adding or removing devices toor from the system, ensurethat the power cables for the devices are unpluggedbefore the signal cables are connected. Ifpossible , disconnect all power cables fromthe existing system beforeyou add a device. • Before connecting or removing signalcables from the motherboard,
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Where to find more information Refer to the following sources for additional information and forproduct and software updates. 1. ASUS websites The ASUS websiteprovides updated informationon ASUS hardware andsoftwar e products. Refer to the ASUS contact information. 2. Optional documentation Your product package may include optional documentation, such as warranty flyers, that may have beenadded byyour dealer. These documents are notpart of the standardpackage. C
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Package contents Check yourmotherboard package for the followingitems. Motherboard ASUS A55BM-A/USB3 motherboard Cables 2 x Serial ATA 3.0 Gb/s cables Accessories 1x I/O Shield Application DVD SupportDVD Documentation User Guide Ifany of theabove items is damaged or missing, contact yourretailer . A55BM-A/USB3 specifications summary ® ® APU AMD FM2+Socket for AMD A-series/Athlon™Series processors ® AMD Turbo Core Technology 3.0 support Suppo
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A55BM-A/USB3 specifications summary ® Storage / RAID AMD A55 FCH: - 6 x Serial ATA 3.0Gb/s connectors support RAID 0, RAID1, RAID 10 and JBOD configurations ® LAN Realtek 8111G PCIe Gigabit LAN controller ® Audio Realtek ALC887-VD 8-channel High Definition Audio CODEC • Use a chassis with HD audio module in the front panel to support an 8-channel audio output. ® USB AMD A55 FCH: - 2 x USB 3.0/2.0/1.1ports (at the back panel) - 6 x USB 2.0/1.1 ports (4 ports atth
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A55BM-A/USB3 specifications summary Back Panel I/O 1x PS/2 mouse port(green) ports 1 xPS/2 keyboard port (purple) 1x HDMI port 1 xDVI-D port 1 x D-Sub output port 1 x LAN (RJ-45) port 2 x USB 3.0/2.0/1.1 ports 2 xUSB 2.0/1.1 ports 8-channel audioI/O ports (3-jack) Internal I/O 2 x USB2.0/1.1 connectors support additional 4 USB2.0/1.1 ports connectors 6x SATA 3.0Gb/s connectors 1x COM connector 1 x Systempanel connector 1x Internal Speaker connecto
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Product introduction 1 1.1 Before you proceed Take noteof the followingprecautions before you installmotherboard componentsor change anymotherboard settings. • Unplug the power cord fromthe wall socketbefore touchingany component. • Before handling components, use a grounded wriststrap or touch asafely grounded objector a metal object, suchas the powersupply case,to avoiddamaging them due to static electricity. • Holdcomponents byt
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1.2 Motherboard overview Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it. Ensure that youunplug the power cord beforeinstalling or removing the motherboard. Failureto do socan cause you physical injury and damage motherboard components. 1.2.1 Placement direction Wheninstalling the motherboard,ensure that you place itinto thechassis in thec orrect orientation. Theedge wi
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USBPWF COM CLRTC 1.2.3 Motherboard layout 1 2 3 4 5 18.3cm(7.2in) CPU_FAN CHA_FAN KBMS DIGI +VRM ATX12V HDMI USB3_12 LAN_USB12 ASM 1042 2 AUDIO A55BM-A/USB3 6 RTL 8111G PCIEX16 Super BATTERY ® AMD PCIEX1_1 I/O 7 A55 SPEAKER SB_PWR F_PANEL ALC PCI1 887 64Mb SPDIF_OUT BIOS 8 USB56 USB34 SATA3G_1 SATA3G_2 SATA3G_3 AAFP 15 14 13 12 11 10 9 7 Connectors/Jumpers/Slots/LED Page 1. Keyboard power (3-pin KB_USBPWB) 1-12 2. ATX power connectors(24-pin EATXPWR, 4-pin ATX12V) 1-16 3. AMDFM2+ socke
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1.3 Accelerated Processing Unit (APU) ® This motherboard comes with anFM2+ socket designed for AMD A-series accelerated ® processorswith AMD Radeon™ HD 7000/8000 seriesgraphics. A55BM-A/USB3 A55BM-A/USB3 CPU socket FM2+ Ensure that you use an APU designed for the FM2+ socket. The APU fits in only one correctorientation. DO NOT force the APUinto the socket to preventbending the pins and damagingthe APU! 1.3.1 Installing the APU 1 2 1-4 Chapter1: Product
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3 4 1.3.2 APU heatsink and fan assembly installation Apply the Thermal Interface Material to the APUheatsink and APUbefore you install the heatsink andfan if necessary. To install the APU heatsink and fan assembly 1 2 ASUS A55BM-A/USB3 1-5
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3 4 5 To uninstall the APU heatsink and fan assembly 3 1 2 4 5 1-6 Chapter1: Product introduction
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1.4 System memory 1.4.1 Overview The motherboard comes with twoDouble Data Rate3 (DDR3)Dual Inline Memory Modules (DIMM)sockets. A DDR3 modulehas the same physicaldimensions asa DDR2 DIMM but isnotch ed differently to prevent installation ona DDR2 DIMMsocket. DDR3 modules arede veloped for better performance with less powerconsumption. The figure illustrates the location of the DDR3 DIMM sockets: Channel Sockets Channel A DIMM_A1 ChannelB DIMM_B1
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1.4.2 Memory configurations Youmay install1GB, 2GB, 4GB, and 8GB unbufferednon -ECCDDR3 DIMMs into the DIMM sockets. • You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation. • Always install DIMMs withthe sameCAS latency .For optimalcompatibility ,we recommendth
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1.4.3 Installing a DIMM 1 2 3 To remove a DIMM B A ASUS A55BM-A/USB3 1-9
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1.5 Expansion slots Inthe future,you may needto install expansion cards. Thefollowing sub -sections describe the slots and the expansion cards that theysupport. Unplug thepower cord before addingor removing expansion cards. Failure todo so may causeyou physical injury and damage motherboard components. 1.5.1 Installing an expansion card To installan expansion card: 1. Beforeinstalling the expansioncard, read the documentation t
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1.5.4 PCI Express x1 slot Thismotherboard supports PCI Express 2.0 x1 network cards, SCSI cards,and ot hercards that comply with the PCI Express specifications. 1.5.5 PCI Express x16 slot Thismotherboard supports one PCI Express 3.0/2.0 x16 graphics cards thatcomp lywith the PCI Express specifications. IRQ assignments for this motherboard A B C D E F G H PCIEx16_1 – – shared – – – – – PCIEx1_1 shared – – – – – – – PCI1slot – – – – shared – – – RealtekLAN controlle
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Toerase the R TC RAM: 1. Turn OFF thecomputer andunplug thepower cord. 2. Movethe jumper cap from pins1-2 (default) to pins 2-3. Keep the cap on pins2-3 forabout 5-10 seconds,then movethe cap back to pins1-2. 3. Plug thepower cord and turn ON the computer. 4. Holddown the< Del>key during the bootprocess and enter BIOS setupto re- enterdata. Exceptwhen clearingthe R TCRAM, never remove the
