3.8 Serial Ports .................................................................................................................................. 35
3.8.1 COM1 Connectors ..................................................................................................................... 35
3.8.2 COM2 and COM3 Header Connectors ...................................................................................... 36
3.8.3 COM4 Header Connectors ........................................................................................................ 36
3.9 Ethernet Connectors ................................................................................................................... 37
3.9.1 Ethernet Connectors 1 and 2 (ETHER1 and ETHER2) ............................................................. 37
3.10 USB Connectors (USB) .............................................................................................................. 38
3.10.1 USB Connector 2/3 (USB2/3) .................................................................................................... 38
3.10.2 USB Connector 4/5 (USB4/5) .................................................................................................... 39
3.10.3 USB Connector 0/1/6/7 (USB0/1/6/7) ........................................................................................ 39
3.10.4 USB Connector 8/9 (USB8/9) .................................................................................................... 40
3.10.5 USB Connector 10/11 (USB10/11) ............................................................................................ 40
3.11 Audio Connectors ........................................................................................................................ 41
3.11.1 Audio Speakers, Line-In, Line-Out and Microphone ................................................................. 41
3.11.2 CDROM Audio Input (CDROM) ................................................................................................. 42
3.11.3 Audio Header (AUDIO_HEAD) .................................................................................................. 43
3.12 Fan Connector (FAN_CPU) ........................................................................................................ 44
3.13 Clear CMOS Jumper (Clr-CMOS /JBAT1) .................................................................................. 45
3.14 The Clear ME register Jumper (Clr-ME / JBAT2) ....................................................................... 45
3.15 The SPI Jumper (SPI-Jumper / JP6) .......................................................................................... 45
3.16 Interface BIOS Jumpers (JP3 and JP5))..................................................................................... 45
3.17 TPM Connector (TPM) ................................................................................................................ 46
3.18 SPI Connector (SPI).................................................................................................................... 46
3.19 Front Panel Connector (FRONTPNL) ......................................................................................... 47
3.20 Feature Connector (FEATURE) .................................................................................................. 48
3.21 PCI Slot Connector (PCI Slot) ..................................................................................................... 49
3.21.1 Signal Description – PCI Slot Connector ................................................................................... 50
3.21.2 KTQ45 PCI IRQ & INT routing ................................................................................................... 51
4 Onboard connectors and Mating connectors ................................. 52
5 System Resources ........................................................................ 53
5.1 Memory Map ............................................................................................................................... 53
5.2 PCI Devices ................................................................................................................................ 54
5.3 Interrupt Usage ........................................................................................................................... 55
5.4 IO Map ........................................................................................................................................ 56
6 Overview of BIOS Features ........................................................... 57