A
SPECIFICATIONS AND 
CABLING REQUIREMENTS
This appendix lists the specifications, standards 
conformance, cable requirements, and connector pin 
assignments for the EtherLink PCI NICs. 
3C905C-TX-M NIC Specifications
Hardware
Bus interface PCI Local Bus Specification, Revision 2.2
32-bit bus
PCI master Supports bus master scatter-gather DMAs.
Dimensions Height: 7.62 cm (3.00 in)
Length: 14.86 cm (5.85 in)
Power requirement +5 V ±5% @ 650 mA maximum
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 –984 ft to 9,840 ft (–300 to 3,000 m)
Standards Conformance
IEEE 802.3 10BASE-T
IEEE 802.3u 100BASE-TX
IEEE 802.3x Full Duplex auto-negotiation and flow control
NWay 10/100 auto-negotiation
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