Acer Veriton 7500G Veriton 3500G/5500G/7500G Service Guide - Page 55

Parameter IDE Primary Master PIO IDE Primary Slave PIO IDE Secondary Master PIO IDE Secondary Slave PIO IDE Primary Master UDMA IDE Primary Slave UDMA IDE Secondary Master UDMA IDE Secondary Slave UDMA USB controller USB Keyboard Support USB Mouse Support AC97 Audio Onboard LAN Controller Init Display First IDE HDD Block Mode Power on Function Onboard FDC Controller Onboard Serial Port 1 Description Setting these items to Auto activates the HDD speed auto-detect function. The PIO mode specifies the data transfer rate of the HDD. For example, mode 0 data transfer rate is 3.3 MB/s, mode 1 is 5.2 MB/s, mode 2 is 8.3 MB/s, mode 3 is 11.1 MB/s and mode 4 is 16.6 MB/s. If your hard disk performance becomes unstable, you may manually try the slower mode. Caution: It is recommended that you connect the first IDE device of each channel to the endmost connector of the IDE cable. These items allow you to set the Ultra DMA/33/66/100 mode supported by the hard disk drive connected to your primary and secondary IDE connectors. Options Auto Model 0 Mode 1 Mode 2 Mode 3 Mode 4 Auto Disabled This item is used to enable or disable the On-chip USB. This item lets you enable or disable the USB keyboard driver within the onboard BIOS. The keyboard driver simulates legacy keyboard command and lets you use a USB keyboard during POST or after boot if you don't have a USB driver in the operating system. This item lets you enable or disable the USB mouse driver within the onboard BIOS. The mouse driver simulates legacy mouse command and lets you use a USB mouse during POST or after boot if you don't have a USB driver in the operating system. Enabling the on-die AC97 Audio if no add-on PCI Audio device. ICH4 On-die LAN If you installed a PCI VGA card and an AGP card at the same time, this item lets you decide which one is the initial display card. This feature enhances disk performance by allowing multisector data transfers and eliminates the interrupt handling time for each sector. Most IDE drives, except with old designs, can support this feature. The options to switch on the system. Button only (press the power button only) Any Key (press any key on the PS2 keyboard or press the power button) Keyboard 98 ( press key on the PS2 keyboard or press the power button) Setting this parameter to Enabled allows you to connect your floppy disk drives to the onboard floppy disk connector instead of a separate controller card. Change the setting to Disabled if you want to use a separate controller card. This item allows you to assign an address and interrupt for the board serial port. Enabled Disabled Enabled Disabled Enabled Disabled Auto Disabled Enabled Disabled Onboard/ AGP PCI Slot Enabled Disabled Button Only Any Key Keyboard 98 Enabled Disabled 3F8/ IRQ4 Auto 2F8/ IRQ3 3E8/ IRQ4 2E8/ IRQ3 Disabled Chapter 2 45