Arkon AIMB-258 user manual Table B.4 RS-232 Serial Port COM1~COM2

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Table B.3: DVI Connector (VGA1B)

6	GND	16	GND
7	GND	17	GND
8	GND
9	+5V_VGA
10	GND

B.4 RS-232 Serial Port (COM1~COM2)

1

6

Table B.4: RS-232 Serial Port (COM1~COM2)

PinSignal

1	DCD/TX_422N/TX_485N
2	RXD/TX_422P/TX_485P
3	TXD/RX_422P
4	DTR/RX_422N
5	GND
6	DSR
7	RTS
8	CTS
9	RRI

Appendix B Pin Assignments

65	AIMB-258 User Manual

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Contents AIMB-258 Electrical safety Safety InformationCertifications Packing List Technical SupportContents Appendix B Bios OperationTable B.3 DVI Connector VGA1B Viii Chapter Before You Proceed Placement DirectionMotherboard Overview Screw Holes Product IntroductionMotherboard Layout Motherboard LayoutPCI SpecificationsOperation System AIMB-258 Operating System support listChapter Board DiagramOrdering Information Bracket View AccessoriesRiser Card Jumper Setting List Layout Content ListJSETCOM2 COM2 RS232/422/485 Mode Selection JSETCOM1 COM1/+5 V/+12 V SelectionPSON1 ATX, AT Mode Selection J1LCD Power 3.3 V/5.5 V SelectionCMOS1 Clear Cmos Central Processing Unit CPU for AIMB-258 JWDT1 Watchdog Timer Output OptionJobs HW monitor Installing the CPU Product Introduction Motherboard Hole Installing the CPU Heatsink and FanProduct Introduction Uninstalling the CPU Heatsink and Fan Dimm Sockets Location System MemorySystem Memory Sodimm DDR3 Memory Support ListRear Panel Connectors Connectors10 Rear Panel Connectors 11 LEDsCPU Fan Connector CPUFAN1 System Fan Connector SYSFAN1, SYSFAN2 Page ATX soft power switch JFP1 / Pwrsw Front Panel Connector JFP1/JFP2/JFP3Reset JFP1 / Reset HDD LED JFP2 / HddledUSB 2.0 Connector USB56, USB78 Power LED and keyboard lock connector JFP312 ATX power supply LED status No support for AT power Important notes on the Motherboard Power Requirements ATX Power Connector ATX1LCD Inverter Connector VP1 Lvds Connector LVDS1 SATA1 SATA2 PCIe x 16 Slot Pcie X SPI Flash ConnectorSPICN1 Product Introduction CF connector Bios Operation Bios Setup Bios IntroductionMain Menu Standard Cmos Features Advanced Bios Features Advanced Chipset Features Integrated Peripherals Super IO Device Onboard DeviceUSE Device Setting Power Management Setup Suspend Mode Disabled Power Management User DefinedHDD Power Down Mode Disabled PowerOn by LAN EnabledPC Health Status 8 PnP/PCI ConfigurationsCPU Warning Temperature Load Setup Defaults Set PasswordCurrent System Temperature Current CPU TemperatureTo Change Password To Establish PasswordTo Disable Password Chipset Software Install Utility Introduction Before you BeginWindows Vista/XP Driver Setup Page VGA Setup Introduction LAN Configuration Installation FeaturesWindows Vista/XP Driver Setup Realtek RTL8111C LAN Configuration Page Appendix a Watchdog timer overview Programming the Watchdog TimerProgramming the Watchdog Timer Appendix a Programming the Watchdog Timer Table A.1 Watchdog Timer Registers Example Program Page Appendix a Programming the Watchdog Timer Page Appendix B VGA Connector VGA1A USB Connector USB56,USB78DVI Connector VGA1B Table B.4 RS-232 Serial Port COM1~COM2 RS-232 Serial Port COM1~COM2Table B.5 RS-232 Serial Port COM23 RS-232 Serial Port COM3 ~ COM6CPU Fan Power Connector CPUFAN1 PS/2 Keyboard/ Mouse Connector KBMS1Table B.6 PS/2 Keyboard/ Mouse Connector KBMS1 Table B.7 CPU Fan Power Connector CPUFAN1Table B.8 Power LED and Keylock Connector JFP3 Power LED & Keyboard Lock Connector JFP3Table B.9 External Speaker Connector JFP2/SPEAKER Table B.10 Audio Front Panel Connector JFP1/ Reset Audio Front Panel Connector FPAUD1Table B.11 Audio front panel connector FPAUD1 Table B.12 Gpio Pin Header GPIO1 Gpio Pin Header GPIO1Table B.13 Lvds Connector LVDS1 Lvds Connector LVDS1Table B.14 Lvds Power Jumper J1 Lvds Power Jumper J1Lvds Invert VP1 Table B.15 Lvds Invert VP1DMA Channel Assignments System I/O PortsTable B.16 System I/O Ports Table B.17 DMA Channel Assignments19 1st MB Memory Map Interrupt AssignmentsTable B.18 Interrupt Assignments Table B.19 1st MB Memory MapAppendix B Pin Assignments