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20 Chapter 1
Parallel Port
Item Specification
Parallel port controller Embedded in LPC 47B277
Parallel port controller resident bus LPC
Number of parallel ports 1
Support ECP/EPP ECP / EPP 1.7 & 1.9
Connector type 25-pin D-type female connector
Parallel port function control Enable/disable by BIOS Setup
Optional ECP DMA channel
(in BIOS Setup)
DMA channel 1
DMA channel 3
Optional parallel port I/O address
(via BIOS Setup)
378h
278h
Optional parallel port IRQ
(via BIOS Setup)
IRQ5
IRQ7
Serial Port
Item Specification
Serial port controller Embedded in Intel 82801BA ICH II
Serial port controller resident bus LPC
Number of serial port 2
Serial ports location CN4, COM 2
16550 UART support Yes
Connector type 10-pin connector
Optional serial port I/O address
(via BIOS Setup)
3F8h, 2F8h, 3E8h, 2E8h
Optional serial port IRQ
(via BIOS Setup)
4, 3
Modem
Item Specification
Fax modem data baud rate (bps) 14.4K bps
Data modem data baud rate (bps) 56K bps
Voice modem Yes
Modem connector type RJ11
Full duplex Not applicable
USB Port
Item Specification
Universal HCI USB 1.0
USB Class Support legacy keyboard for legacy mode