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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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