Acer Understanding JUSB1 and JUSB2 Connectors: Pin Definitions and Connectivity Options

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Front USB Connector: JUSB1 or JUSB2

The mainboard provides one front Universal Serial Bus connector for users to connect to USB devices. Users can choose either the JUSB1 or the JUSB2 depending on their needs. The JUSB1 is compliant with Intel® Front

Panel I/O Connectivity Design Guide.

JUSB1

(Intel spec)

1 2

910

JUSB1 Pin Definition

Pin	Description	Pin	Description

1	VCC	2	VCC
3	USB0-	4	USB1-
5	USB0+	6	USB1+
7	GND	8	GND
9	NC	10	OC0

JUSB2

	1	2
	9	10
	JUSB2 Pin Definition
Pin	Description	Pin	Description
1	VCC	2	GND
3	USB0-	4	GND
5	USB0+	6	USB1+
7	GND	8	USB1-
9	GND	10	VCC

Chapter 5

82

Image 88

Contents Service Guide Aspire 3300SDate Chapter Updates Revision HistoryCopyright DisclaimerConventions Screen messagesPreface Page System Specifications OverviewFeatures PerformanceExpansion Label Icon Color Description Front Panel Aspire 3300SCD-ROM/DVD-ROM/CD-RW LED Hard disk drive activity LED Rear Panel Aspire 3300S Label Icon Color Description System Block Diagram Aspire 3300S Intel P4 CPUChapter Main Board Layout Aspire 3300S Component FunctionIDE 1~IDE JCD1/JAUX1/JMD1CPUFA/SYSFA JFP1/JFP2Keyboard Component DescriptionPlay/Pause button Forward ButtonWindows + F Find Document Shift + Windows + M Undo Minimize AllSpecification Hardware Specifications and Configurations2MB 2GB DDR SdramSlot Memory Module Total Memory Maximum System Memory SupportedAudio Interface LPCItems Specifications IRQ5IRQ7 COM1, COMDevice Address Size FunctionRoute Reg Mask Hex Range Devices IRQx System Devices Add-On-Card DevicesTemperature & Humidity DRQx System Devices Add-On-Card DevicesController HumidityInput Frequency Frequency Variation Range Input Voltage Variation RangeInput Current Measuring Range 180 264 Vrms Output Requirements Regulation Current RatingMaxPower Management Functions Device Standby ModeChapter System Utilities Entering Setup Page Product Information Following table describes the parameters found in this menu Parameter DescriptionStandard Cmos Features Parameter Description OptionsAll Errors 44 MB, 3.5-inchNone CGA40Press Enter AutoLBA CHSDisabled Advanced Bios FeaturesEnabled Setup FastAdvanced Chipset Features Advanced Dram ControlNormal Mode Integrated Peripherals USBParameter Description Options Power Management Setup Susp, Stby -- Off Power OffSYNC+Blank PnP/PCI Configuration Auto EscdPC Health Status Frequency Control Load Default Settings Set Supervisor/User Password Chapter Save & Exit Setup/Exit Without Saving Chapter Machine Disassembly and Replacement General Information Before You BeginDisassembly Procedure Flowchart Opening the Housing Removing the Housing CoverRemoving the Front Panel Removing the EMI Audio CoverRemoving the AGP VGA Card Removing the Modem CardRemoving the FDD and DVD Frame Page Removing the Intrusion Alarm Cable Removing the USB and Audio Board Removing the Hard Disk DriveRemoving the Dimm Removing the Power Supply Removing the RTC BatteryRemoving the Processor Removing the Main board Chapter Troubleshooting Power-On Self-Test Post Checkpoint DescriptionReset keyboard for Winbond 977 series Super I/Q chips Checkpoint Description Chapter Auto Chapter Bios Messages Action/FRU Post Error Messages ListRun Setup Chapter Error Symptoms List Error Symptom Action/FRU Processor / Processor FanMain board and Memory Diskette DriveError Symptom Action/FRU Hard Disk DriveCD/DVD-ROM Drive Real-Time ClockAudio Error Symptom Action/FRU Parallel/Serial Ports Power SupplyOther Problems KeyboardUndetermined Problems DimmFloppy Disk Drive Connector FDD1 Chassis Intrusion Switch Connector J8Hard Disk Connectors IDE1 & IDE2 TIPAux Line-In Connector JAUX1 CD-In Connector JCD1Modem-In Connector JMD1 Fan Power Connectors CPUFA/SYSFA 10 JFP1 Front Panel Connectors JFP1 & JFP2Intel spec Front Panel Audio Connector Jaud JaudFront USB Connector JUSB1 or JUSB2 Panel I/O Connectivity Design GuideIrDA Infrared Module Header JIR1 Jumpers Clear Cmos Jumper JBAT1PCI Slots AGP Accelerated Graphics Port SlotCNR Communication Network Riser PCI Interrupt Request Routing Chapter FRU Field Replaceable Unit List Aspire 3300S Exploded Diagram Picture Partname Description Power SW/HDD Power LEDFDD Cable 34/34PIN Turbo LED Cable 2PINWILAM.1GV WILAM.1GWWILAM.1GK 128MB DDR266 MicronPower Supply 160W Daughter BoardVGA Card Modem Card V92 56KRotate Bracket Assembly Rotate Bracket Bracket Assembly IOFront Panel Assy Front Bezel VT3200 BRACKETS81MH34A USB EMI CoverChapter Model Definition and Configuration Appendix a Test Compatible Components PC2100 DDR RAM Microsoft Windows XP Environment TestPC2700 DDR RAM Cdrom Teac FD235HF 1.44MBDvdrom CD RW Yamaha CRW3200E-VK Sony CRX175A CPU Online Support Information 103 Advanced Options Idsel Post Rimm Uart