Acer 420 manual USB Port, Pcmcia Port, System Board Major Chips, Keyboard

Parallel Port

Item			Specification
Connector type		25-pin D-type connector, in female type
Parallel port function control		Enable/Disable/Auto (BIOS or operating system chooses
		configuration) by BIOS Setup
		Note: Depending on your operating system, disabling an unused
		device may help free system resources for other devices.
Supports ECP/EPP/Bi-directional (PS/2		Yes (set by BIOS setup)
compatible)		Note: When Mode is selected as EPP mode, “3BCh” will not be
		available.
Optional ECP DMA channel (in BIOS Setup)		DMA channel 1
Optional parallel port I/O address (in BIOS		378h, 278h
Setup)
Optional parallel port IRQ (in BIOS Setup)		IRQ7, IRQ5
USB Port
Item			Specification
USB Compliancy Level		1.1
OHCI		USB 1.1
Number of USB port		2
Location		Right side
Serial port function control		Enable/Disable by BIOS Setup
PCMCIA Port
Item			Specification
PCMCIA controller	OZ6912 CardBus controller
Supports card type	Type II
Number of slots	One type-II
Access location	Right panel
Supports ZV (Zoomed Video) port	No ZV support
Supports 32 bit CardBus	Yes (IRQ11)
System Board Major Chips
Item			Controller
System core logic	Brookdale MP+ICH3-M
Super I/O controller	SMsC 47N227, LPC interface
Audio controller	Realtek ALC202 Codec
Video controller	ATI M7-C
Hard disk drive controller	ICH3-M
Keyboard controller	NS 87591
RTC	ICH3-M
Keyboard
Item			Specification
Keyboard controller			NS 87591
Keyboard vendor & model name			Acer proprietary keyboard w/o launch button embeded
Total number of keypads			87/88/90 keys with 101/102 key emulation

28 Chapter 1