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Specifications and
Cabling Requirements
This appendix lists the specifications, standards conformance, and cable requirements for
the 3Com 100 Secure Fiber-FX (3CR990-FX-97) NIC.
3CR990-FX-97 NIC Specifications
The following table provides environmental, interface, and standards information for the
3Com 100 Secure Fiber-FX (3CR990-FX-97) NIC.
Hardware
Memory 128 KB external RAM
Bus interface PCI Local Bus Specification, Revision 2.2
32-bit bus
PCI master Supports bus master scatter-gather DMAs.
Dimensions Length: 13.65 cm (5.375 in)
Height: 8.41 cm (3.31 in)
Power requirement +5 V ±5% operating 1.26A maximum for normal operation (375
mA for low power mode)
Network Interface
100 Mbps Ethernet
100BASE-FX
Ethernet IEEE 802.3 industry standard for a 100 Mbps fiber 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 100BASE-FX
IEEE 802.3x full-duplex and flow control
IEEE 802.1p (General Attribute Registration protocol) for multicast addresses
IEEE 802.1Q VLAN Tagging
(continued)