B85-A User's Manual
Page 3
Contents Safety information iv About this guide iv Package contents vi B85-A specifications summary vi Product introduction 1.1 Before you proceed 1-1 1.2 Motherboard overview 1-1 1.3 Central Processing Unit (CPU 1-3 1.4 System memory 1-7 1.5 Expansion slots 1-9 1.6 Jumpers 1-10 1.7 Connectors 1-11 1.8 Onboard LEDs 1-19 1.9 ... 2-9 2.4 Main menu 2-10 2.5 Ai Tweaker menu 2-12 2.6 Advanced menu 2-24 2.7 Monitor menu 2-33 2.8 Boot menu 2-36 2.9 Tools menu 2-42 2.10 Exit menu 2-43 Appendices Notices...A-1 ASUS contact information A-3 iii
Contents Safety information iv About this guide iv Package contents vi B85-A specifications summary vi Product introduction 1.1 Before you proceed 1-1 1.2 Motherboard overview 1-1 1.3 Central Processing Unit (CPU 1-3 1.4 System memory 1-7 1.5 Expansion slots 1-9 1.6 Jumpers 1-10 1.7 Connectors 1-11 1.8 Onboard LEDs 1-19 1.9 ... 2-9 2.4 Main menu 2-10 2.5 Ai Tweaker menu 2-12 2.6 Advanced menu 2-24 2.7 Monitor menu 2-33 2.8 Boot menu 2-36 2.9 Tools menu 2-42 2.10 Exit menu 2-43 Appendices Notices...A-1 ASUS contact information A-3 iii
B85-A User's Manual
Page 6
...front panel to support an 8-channel audio output. (continued on the CPU types. ** Refer to www.asus.com for the following items. Motherboard Cables Accessories Application DVD Documentation ASUS B85-A motherboard 2 x Serial ATA 6.0 Gb/s cables 1 x I/O Shield Support DVD User Guide If any... of DDR3 1600MHz. ** When you are using a Windows® 32-bit operating system. *** Refer to www.asus.com for Intel® 4th Generation...
...front panel to support an 8-channel audio output. (continued on the CPU types. ** Refer to www.asus.com for the following items. Motherboard Cables Accessories Application DVD Documentation ASUS B85-A motherboard 2 x Serial ATA 6.0 Gb/s cables 1 x I/O Shield Support DVD User Guide If any... of DDR3 1600MHz. ** When you are using a Windows® 32-bit operating system. *** Refer to www.asus.com for Intel® 4th Generation...
B85-A User's Manual
Page 7
... BIOS EZ Mode featuring friendly graphical user interface - Realtek® 8111G Gigabit LAN controller Intel® B85 Express Chipset - supports ASUS USB 3.0 Boost 2 x USB 3.0/2.0 ports at midboard for extended component lifespan ASUS High-quality 5K-Hour Solid Capacitors - 2 .5x Long Lifespan with 5X Protection: DIGI+VRM, DRAM Fuse, ESD Guards, High-quality 5K...
... BIOS EZ Mode featuring friendly graphical user interface - Realtek® 8111G Gigabit LAN controller Intel® B85 Express Chipset - supports ASUS USB 3.0 Boost 2 x USB 3.0/2.0 ports at midboard for extended component lifespan ASUS High-quality 5K-Hour Solid Capacitors - 2 .5x Long Lifespan with 5X Protection: DIGI+VRM, DRAM Fuse, ESD Guards, High-quality 5K...
B85-A User's Manual
Page 8
B85-A specifications summary Back Panel I/O ports Internal connectors BIOS features Manageability Support DVD Form factor 1 x PS/2 keyboard port (purple) 1 x PS/2 mouse port (green) 1 x DVI-D port 1 x RGB ... Mb Flash ROM, UEFI AMI BIOS, PnP, DMI v2.0, WfM2.0, SM BIOS v2.7, ACPI v4.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3, My Favorites, Quick Note, Last Modified log, F12 PrintScreen, F3 Shortcut function, and ASUS DRAM SPD (Serial Presence Detect) memory information Wfm 2.0, DMI 2.0, WOL by PME, PXE Drivers...
B85-A specifications summary Back Panel I/O ports Internal connectors BIOS features Manageability Support DVD Form factor 1 x PS/2 keyboard port (purple) 1 x PS/2 mouse port (green) 1 x DVI-D port 1 x RGB ... Mb Flash ROM, UEFI AMI BIOS, PnP, DMI v2.0, WfM2.0, SM BIOS v2.7, ACPI v4.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3, My Favorites, Quick Note, Last Modified log, F12 PrintScreen, F3 Shortcut function, and ASUS DRAM SPD (Serial Presence Detect) memory information Wfm 2.0, DMI 2.0, WOL by PME, PXE Drivers...
B85-A User's Manual
Page 9
... any component. • Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as indicated in the correct orientation. ASUS B85-A 1-1 The edge with the component. • Before you install or remove any component, place it into the chassis in the image. 1.2.2 Screw holes Place six...
... any component. • Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as indicated in the correct orientation. ASUS B85-A 1-1 The edge with the component. • Before you install or remove any component, place it into the chassis in the image. 1.2.2 Screw holes Place six...
B85-A User's Manual
Page 10
Place this side towards the rear of the chassis B85-A 1.2.3 Motherboard layout 1 2 34 3 5 20.8cm(8.2in) KBMS EATX12V DIGI +VRM CPU_FAN DDR3 DIMM_A1 (64bit, 240-pin module) DDR3 DIMM_A2 (64bit, 240-pin module) ...pin module) EATXPWR DVI_VGA LGA1150 1-2 USB910 2 USB3_56 30.5cm(12.0in) LAN_USB34 USB3_12 SATA6G_2 SATA6G_1 BATTERY AUDIO COM CHA_FAN1 6 PCIEX1_1 B85-A RTL 8111G PCIEX16_1 7 Super I/O PCIEX1_2 PCI1 Intel® B85 8 SB_PWR ASM 1083 Realtek ALC887 SPDIF_OUT AAFP 14 13 PCIEX16_2 PCI2 PCI3 USB1112 USB1314 CLRTC 64Mb BIOS SATA_6 SATA_5 PANEL SATA6G_4...
Place this side towards the rear of the chassis B85-A 1.2.3 Motherboard layout 1 2 34 3 5 20.8cm(8.2in) KBMS EATX12V DIGI +VRM CPU_FAN DDR3 DIMM_A1 (64bit, 240-pin module) DDR3 DIMM_A2 (64bit, 240-pin module) ...pin module) EATXPWR DVI_VGA LGA1150 1-2 USB910 2 USB3_56 30.5cm(12.0in) LAN_USB34 USB3_12 SATA6G_2 SATA6G_1 BATTERY AUDIO COM CHA_FAN1 6 PCIEX1_1 B85-A RTL 8111G PCIEX16_1 7 Super I/O PCIEX1_2 PCI1 Intel® B85 8 SB_PWR ASM 1083 Realtek ALC887 SPDIF_OUT AAFP 14 13 PCIEX16_2 PCI2 PCI3 USB1112 USB1314 CLRTC 64Mb BIOS SATA_6 SATA_5 PANEL SATA6G_4...
B85-A User's Manual
Page 11
...USB 3.0 connector (20-1 pin USB3_12) 8. Digital audio connector (4-1 pin SPDIF_OUT) 14. Intel® B85 Serial ATA 3.0Gb/s connectors (7-pin SATA_5~6 [dark brown]) 11. B85-A B85-A CPU socket LGA1150 ASUS B85-A 1-3 DDR3 DIMM slots 6. Serial port connectors (10-1 pin COM) 2. ATX power connectors (24-pin... Layout contents Connectors/Jumpers/Slots/LED 1. Clear RTC RAM (3-pin CLRTC) ) 10. USB 2.0 connectors (10-1 pin USB11~14) 13. Intel® B85 Serial ATA 6.0Gb/s connector (7-pin SATA6G_1~4 [yellow]) 7. Front panel audio connector (10-1 pin AAFP) Page 1-13 1-14 1-16 1-3 1-7 1-17...
...USB 3.0 connector (20-1 pin USB3_12) 8. Digital audio connector (4-1 pin SPDIF_OUT) 14. Intel® B85 Serial ATA 3.0Gb/s connectors (7-pin SATA_5~6 [dark brown]) 11. B85-A B85-A CPU socket LGA1150 ASUS B85-A 1-3 DDR3 DIMM slots 6. Serial port connectors (10-1 pin COM) 2. ATX power connectors (24-pin... Layout contents Connectors/Jumpers/Slots/LED 1. Clear RTC RAM (3-pin CLRTC) ) 10. USB 2.0 connectors (10-1 pin USB11~14) 13. Intel® B85 Serial ATA 6.0Gb/s connector (7-pin SATA6G_1~4 [yellow]) 7. Front panel audio connector (10-1 pin AAFP) Page 1-13 1-14 1-16 1-3 1-7 1-17...
B85-A User's Manual
Page 13
4 C 5 A B 1.3.2 CPU heatsink and fan assembly installation Apply the Thermal Interface Material to the CPU heatsink and CPU before you install the heatsink and fan if necessary. ASUS B85-A 1-5
4 C 5 A B 1.3.2 CPU heatsink and fan assembly installation Apply the Thermal Interface Material to the CPU heatsink and CPU before you install the heatsink and fan if necessary. ASUS B85-A 1-5
B85-A User's Manual
Page 15
.... • Always install DIMMs with the same CAS latency. DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2 Channel Channel A Channel B Sockets DIMM_A1 & DIMM_A2 DIMM_B1 & DIMM_B2 B85-A B85-A 240-pin DDR3 DIMM sockets 1.4.2 Memory configurations You may install 1GB, 2GB, 4GB, and 8GB unbuffered non-ECC DDR3 DIMMs into the DIMM sockets....effective use of memory, we recommend that you install memory modules of the lower-sized channel for the OS can be about 3GB or less. ASUS B85-A 1-7 The system maps the total size of the same version or date code (D/C) from a DDR or DDR2 module. DO NOT install ...
.... • Always install DIMMs with the same CAS latency. DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2 Channel Channel A Channel B Sockets DIMM_A1 & DIMM_A2 DIMM_B1 & DIMM_B2 B85-A B85-A 240-pin DDR3 DIMM sockets 1.4.2 Memory configurations You may install 1GB, 2GB, 4GB, and 8GB unbuffered non-ECC DDR3 DIMMs into the DIMM sockets....effective use of memory, we recommend that you install memory modules of the lower-sized channel for the OS can be about 3GB or less. ASUS B85-A 1-7 The system maps the total size of the same version or date code (D/C) from a DDR or DDR2 module. DO NOT install ...
B85-A User's Manual
Page 17
... for later use . Before installing the expansion card, read the documentation that you may cause you removed earlier. 6. Assign an IRQ to install expansion cards. ASUS B85-A 1-9 The following sub‑sections describe the slots and the expansion cards that the cards do so may need IRQ assignments. Keep the screw for...
... for later use . Before installing the expansion card, read the documentation that you may cause you removed earlier. 6. Assign an IRQ to install expansion cards. ASUS B85-A 1-9 The following sub‑sections describe the slots and the expansion cards that the cards do so may need IRQ assignments. Keep the screw for...
B85-A User's Manual
Page 19
... and unplug the power cord. 2. Move the jumper cap from pins 1-2 (default) to default values. 1.7 1.7.1 1 Connectors Rear panel connectors 2 3 45 11 ASUS B85-A 10 9 8 7 6 1-11 Hold down and reboot the system, then the BIOS automatically resets parameter settings to pins 2-3. Removing the cap will cause system boot...remove the cap on pins 2-3 for about 5-10 seconds, then move the jumper again to clear the CMOS RTC RAM data. B85-A CLRTC 12 23 Normal (Default) B85-A Clear RTC RAM Clear RTC To erase the RTC RAM: 1. enter data. Plug the power cord and turn ON the computer...
... and unplug the power cord. 2. Move the jumper cap from pins 1-2 (default) to default values. 1.7 1.7.1 1 Connectors Rear panel connectors 2 3 45 11 ASUS B85-A 10 9 8 7 6 1-11 Hold down and reboot the system, then the BIOS automatically resets parameter settings to pins 2-3. Removing the cap will cause system boot...remove the cap on pins 2-3 for about 5-10 seconds, then move the jumper again to clear the CMOS RTC RAM data. B85-A CLRTC 12 23 Normal (Default) B85-A Clear RTC RAM Clear RTC To erase the RTC RAM: 1. enter data. Plug the power cord and turn ON the computer...
B85-A User's Manual
Page 21
... the USB 2.0 and USB 3.0 ports are for USB 2.0/1.1 devices. 10. DVI port: 165 MHz - COM PIN 1 RXD DTR DSR CTS DCD TXD GND RTS RI B85-A B85-A Serial port (COM) connector The COM module is for any DVI-D compatible device. DVI-D can't be used under a Windows® OS environment and after USB... is for better compatibility. • Intel display architecture design supports the following maximum supported pixel clocks (Pixel Clock = H total x V Total x Frame Rate (Screen refresh rate)): - ASUS B85-A 1-13
... the USB 2.0 and USB 3.0 ports are for USB 2.0/1.1 devices. 10. DVI port: 165 MHz - COM PIN 1 RXD DTR DSR CTS DCD TXD GND RTS RI B85-A B85-A Serial port (COM) connector The COM module is for any DVI-D compatible device. DVI-D can't be used under a Windows® OS environment and after USB... is for better compatibility. • Intel display architecture design supports the following maximum supported pixel clocks (Pixel Clock = H total x V Total x Frame Rate (Screen refresh rate)): - ASUS B85-A 1-13
B85-A User's Manual
Page 22
... a system with ATX 12V Specification 2.0 (or later version) and provides a minimum power of the system chassis. +5V SPDIFOUT GND B85-A SPDIF_OUT B85-A Digital audio connector The S/PDIF module is for ATX power supply plugs. The power supply plugs are for an additional Sony/Philips Digital... forget to install additional devices. 2. com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for your system, refer to a slot opening at http://support.asus. Otherwise, the system will not boot up if the power is inadequate. • If you intend to connect the 4-pin/8-pin ATX ...
... a system with ATX 12V Specification 2.0 (or later version) and provides a minimum power of the system chassis. +5V SPDIFOUT GND B85-A SPDIF_OUT B85-A Digital audio connector The S/PDIF module is for ATX power supply plugs. The power supply plugs are for an additional Sony/Philips Digital... forget to install additional devices. 2. com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for your system, refer to a slot opening at http://support.asus. Otherwise, the system will not boot up if the power is inadequate. • If you intend to connect the 4-pin/8-pin ATX ...
B85-A User's Manual
Page 23
...this connector. The USB 2.0 module is for a chassis-mounted front panel audio I /O module cable to [AC97]. ASUS B85-A 1-15 AGND NC SENSE1_RETUR SENSE2_RETUR AGND NC NC NC AAFP B85-A PIN 1 MIC2 MICPWR Line out_R NC Line out_L PORT1 L PORT1 R PORT2 R SENSE_SEND PORT2 L HD-audio-... These connectors are for details. 5. USB1112 USB1314 USB+5V USB_P11USB_P11+ GND NC USB+5V USB_P13USB_P13+ GND NC B85-A PIN 1 PIN 1 USB+5V USB_P12USB_P12+ GND USB+5V USB_P14USB_P14+ GND B85-A USB2.0 connectors Never connect a 1394 cable to [HD]. Doing so will damage the motherboard! By default,...
...this connector. The USB 2.0 module is for a chassis-mounted front panel audio I /O module cable to [AC97]. ASUS B85-A 1-15 AGND NC SENSE1_RETUR SENSE2_RETUR AGND NC NC NC AAFP B85-A PIN 1 MIC2 MICPWR Line out_R NC Line out_L PORT1 L PORT1 R PORT2 R SENSE_SEND PORT2 L HD-audio-... These connectors are for details. 5. USB1112 USB1314 USB+5V USB_P11USB_P11+ GND NC USB+5V USB_P13USB_P13+ GND NC B85-A PIN 1 PIN 1 USB+5V USB_P12USB_P12+ GND USB+5V USB_P14USB_P14+ GND B85-A USB2.0 connectors Never connect a 1394 cable to [HD]. Doing so will damage the motherboard! By default,...
B85-A User's Manual
Page 24
... power. 1-16 Chapter 1: Product introduction The CPU_FAN connector supports a CPU fan of up to the fan connectors on the fan connectors! USB3_12 B85-A USB3+5V USB3+5V B85-A USB3.0 Front panel connector The USB 3.0 module is purchased separately. 7. These are not jumpers! 6. With an installed USB 3.0 module, ... fan connectors. CPU_FAN CPU FAN PWM CPU FAN IN CPU FAN PWR GND CHA FAN PWM CHA FAN IN CHA FAN PWR GND CHA_FAN1 B85-A B85-A Fan connectors Do not forget to connect the fan cables to connect a USB 3.0 module for USB-chargeable devices, optimized power efficiency,...
... power. 1-16 Chapter 1: Product introduction The CPU_FAN connector supports a CPU fan of up to the fan connectors on the fan connectors! USB3_12 B85-A USB3+5V USB3+5V B85-A USB3.0 Front panel connector The USB 3.0 module is purchased separately. 7. These are not jumpers! 6. With an installed USB 3.0 module, ... fan connectors. CPU_FAN CPU FAN PWM CPU FAN IN CPU FAN PWR GND CHA FAN PWM CHA FAN IN CHA FAN PWR GND CHA_FAN1 B85-A B85-A Fan connectors Do not forget to connect the fan cables to connect a USB 3.0 module for USB-chargeable devices, optimized power efficiency,...
B85-A User's Manual
Page 25
...connectors (7-pin SATA_5~6 [dark brown]) These connectors connect to [AHCI]. ASUS B85-A 1-17 See section 2.6.3 SATA Configuration for details. 9. SATA6G_1 GND RSATA_TXP1 RSATA_TXN1 GND RSATA_RXN1 RSATA_RXP1 GND B85-A SATA6G_2 GND RSATA_TXP2 RSATA_TXN2 GND RSATA_RXN2 RSATA_RXP2 GND SATA6G_4 SATA6G_3 GND RSATA_RXP4 ...RSATA_RXN4 GND RSATA_TXN4 RSATA_TXP4 GND GND RSATA_RXP3 RSATA_RXN3 GND RSATA_TXN3 RSATA_TXP3 GND B85-A Intel® SATA 6.0Gb/s connectors When using hot-plug and NCQ, set the SATA Mode Selection item...
...connectors (7-pin SATA_5~6 [dark brown]) These connectors connect to [AHCI]. ASUS B85-A 1-17 See section 2.6.3 SATA Configuration for details. 9. SATA6G_1 GND RSATA_TXP1 RSATA_TXN1 GND RSATA_RXN1 RSATA_RXP1 GND B85-A SATA6G_2 GND RSATA_TXP2 RSATA_TXN2 GND RSATA_RXN2 RSATA_RXP2 GND SATA6G_4 SATA6G_3 GND RSATA_RXP4 ...RSATA_RXN4 GND RSATA_TXN4 RSATA_TXP4 GND GND RSATA_RXP3 RSATA_RXN3 GND RSATA_TXN3 RSATA_TXP3 GND B85-A Intel® SATA 6.0Gb/s connectors When using hot-plug and NCQ, set the SATA Mode Selection item...
B85-A User's Manual
Page 26
... on or puts the system in sleep or soft-off the system power. 1-18 Chapter 1: Product introduction PWR Ground Reset Ground B85-A PIN 1 HDD_LED PWR_SW RESET * Requires an ATX power supply B85-A System panel connector • System power LED (2-pin PWR_LED) This 2-pin connector is for the HDD Activity LED. 9. The system...
... on or puts the system in sleep or soft-off the system power. 1-18 Chapter 1: Product introduction PWR Ground Reset Ground B85-A PIN 1 HDD_LED PWR_SW RESET * Requires an ATX power supply B85-A System panel connector • System power LED (2-pin PWR_LED) This 2-pin connector is for the HDD Activity LED. 9. The system...
B85-A User's Manual
Page 27
B85-A SB_PWR ON OFF Standby Power Powered Off B85-A Onboard LED ASUS B85-A 1-19 Standby Power LED The motherboard comes with a standby power LED that lights up to indicate that you should shut down the system and unplug the power cable before removing or plugging in soft-off mode. This is a reminder that the system is ON, in sleep mode, or in any motherboard component. The illustration below shows the location of the onboard LED. 1.8 Onboard LEDs 1.
B85-A SB_PWR ON OFF Standby Power Powered Off B85-A Onboard LED ASUS B85-A 1-19 Standby Power LED The motherboard comes with a standby power LED that lights up to indicate that you should shut down the system and unplug the power cable before removing or plugging in soft-off mode. This is a reminder that the system is ON, in sleep mode, or in any motherboard component. The illustration below shows the location of the onboard LED. 1.8 Onboard LEDs 1.
B85-A User's Manual
Page 29
... original motherboard BIOS using the ASUS Update utility. 2.1.1 EZ Update EZ Update is a utility that allows you can also manually update the saved BIOS and select a boot logo when the system goes into POST. Click to automatically update your motherboard's driver, software and firmware Model Name: B85-A Click to find and select... flash disk in case you need to update the BIOS EZ Update requires an Internet connection either through a network or an ISP (Internet Service Provider). ASUS B85-A 2-1
... original motherboard BIOS using the ASUS Update utility. 2.1.1 EZ Update EZ Update is a utility that allows you can also manually update the saved BIOS and select a boot logo when the system goes into POST. Click to automatically update your motherboard's driver, software and firmware Model Name: B85-A Click to find and select... flash disk in case you need to update the BIOS EZ Update requires an Internet connection either through a network or an ISP (Internet Service Provider). ASUS B85-A 2-1