A Specifications and

Cabling Requirements

This appendix lists the specifications, standards conformance, cable requirements, and connector pin assignments for the 3Com 10/100 Secure (3CR990B) NIC.

3CR990B-97 NIC Specifications

The following table provides environmental, interface, and standards information for the 3CR990B-97 NIC.

Hardware

 

Memory

128 KB external RAM

Bus interface

PCI Local Bus Specification, Revision 2.2

PCI master

Supports bus master scatter-gather DMAs.

Dimensions

Length: 13.31 cm (5.24 in)

 

Height: 8.51 cm (3.35 in)

Power requirement

+5 V ±5% operating 1.26A maximum for normal operation

 

(375 mA for low power mode)

 

 

Network Interface

 

10 Mbps Ethernet 10BASE-T

Ethernet IEEE 802.3 industry standard for a 10 Mbps

 

 

baseband CSMA/CD local area network

100 Mbps Ethernet 100BASE-TX

Ethernet IEEE 802.3u industry standard for a 100 Mbps

 

 

baseband CSMA/CD local area network

 

 

Environment

 

Operating temperature

32° to 158° F (0° to 70° C)

Storage temperature

–22°to 194° F (–30°to 90° C)

Operating humidity

10 to 90% noncondensing

Storage humidity

10 to 90% noncondensing

Altitude

–300 to 3,000 m (–984 ft to 9,840 ft)

 

 

Standards Conformance

 

•IEEE 802.3 10BASE-T

•IEEE 802.3u 100BASE-TX

•IEEE 802.3x full-duplex, auto negotiation, and flow control

•IEEE 802.1p (General Attribute Registration protocol) for multicast addresses

•IEEE 802.1Q VLAN Tagging

•Microsoft PC97

•Microsoft PC98

•Microsoft PC99

•PCI 2.1 and 2.2

•DMI 1.0 and 2.0

•ACPI 1.0

•SMBus 2.2

•WBEM, CIM, WMI

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