Clear Cmos Jumper: Jbat1; Agp (Accelerated Graphics Port) Slot; Pci Interrupt Request Routing - MSI KT4A-V Instruction Manual

The mainboard provides two standard USB 2.0 pin headers JUSB1&JUSB2. USB2.0 technology
increases data transfer rate up to a maximum throughput of 480Mbps, which is 40 times faster than
USB 1.1, and is ideal for connecting high-speed USB interface peripherals such as USB HDD, digital
cameras, MP3 players, printers, modems and the like.
MSI Reminds You...
Please note that the pins of VCC & GND must be connected correctly, or it may cause some damage

Clear CMOS Jumper: JBAT1

There is a CMOS RAM on board that has a power supply from
external battery to keep the data of system configuration. With
the CMOS RAM, the system can automatically boot OS every
time it is turned on. If you want to clear the system configuration,
use the JBAT1 (Clear CMOS Jumper) to clear data. Follow the instructions below to clear the data:
MSI Reminds You...
You can clear CMOS by shorting 2-3 pin while the system is off. Then return to 1-2 pin position. Avoid
clearing the CMOS while the system is on; it will damage the mainboard.

AGP (Accelerated Graphics Port) Slot

The AGP slot allows you to insert the AGP
graphics card. AGP is an interface specification
designed for the throughput demands of 3D graphics. It
introduces a 66MHz, 32-bit channel for the graphics controller to directly access main memory. The
mainboard supports 4X/8X AGP card.
PCI (Peripheral Component Interconnect) Slots
The PCI slots allow you to insert the expansion cards to meet your needs. When adding or removing
expansion cards, make sure that you unplug the power supply first. Meanwhile, read the documentation
for the expansion card to make any necessary hardware or software settings for the expansion card,
such as jumpers, switches or BIOS configuration.

PCI Interrupt Request Routing

The IRQ, abbreviation of interrupt request line and pronounced I-R-Q, are hardware lines over which
devices can send interrupt signals to the microprocessor. The PCI IRQ pins are typically connected to
the PCI bus INT A# ~ INT D# pins as follows:
Order1
PCI Slot 1 INT A#
PCI Slot 2 INT B#
PCI Slot 3
INT C#
Order2 Order3
INT B# INT C#
INT C# INT D#
INT D# INT A#
Order4
INT D#
INT A#
INT B#
8