Introduction .1

1.2 Product Features

The ASUS LS99 LAN/SCSI card has two independent SCSI channels, each with a maximum throughput of 160 MBytes/sec. SCSI Channel A has two internal connectors (CHA-WIDE and SCSI-50). SCSI Channel B has one internal connector (CHB-WIDE) and one external connector (CHBEXTWIDE).

 

Internal Ultra160

Internal Ultra160

 

SCSI Connector

SCSI Connector

 

 

(Channel B)

(Channel A)

 

 

CHB-WIDE

CHA-WIDE

 

 

 

®

 

 

 

1

 

 

 

SCSI-50

Internal Narrow

CHBEXTWIDE

 

SCSI Connector

 

 

(Channel A)

 

External Ultra160

 

 

 

SCSI Connector

SCSILED

 

(Channel B)

 

 

 

LED2

 

 

 

LED1

 

 

Adaptec

 

 

3Com

AIC-7899G

 

 

SCSI

 

 

LAN

Controller

 

 

Controller

 

 

 

RJ45

SCSI_EN

 

 

Connector

LAN_EN

 

ASUSCONNECT

1.2.1 PCI Interface

•Full 32-bit (33 MHz) DMA bus master•Zero wait-state bus master data bursts•PCI 5V bus support

1.2.2 SCSI Interface

Latch

•Two separate SCSI channels•16-bit SE/LVD•One 68-pin external high-density SCSI interface for channel B•One 68-pin internal high-density SCSI interface for each channel A & B•One 50-pin fast-SCSI connector for channel A•Fast, Ultra, and Ultra2 data transfer capability•SCSI Plug and Play•SCSI activity LED for each channel

1.2.3 Network Interface

•3Com EtherLink 10/100 LAN controller•32-bit PCI host interface•One RJ45 LAN connector•Remote system alert and network keepalive support

1.2.4 LAN/SCSI card Characteristics

•Dimensions: Approximately 6.0 x 4.0 inches (15cm x 10cm)•ASUS proprietary 32-bit PCI card edge connector

2

Chapter 1 Introduction