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Green 3Com PCI network card with single RJ45 port and gold edge connector

3Com

3Com 3C905CX-TX-M 10/100Mbps PCI network card

SKU CH-7HXH-C6EZB MPN 3C905CX-TX-M

Adds 10/100Mbps wired networking to a desktop via 32-bit PCI with a single RJ45 port and managed boot support

  • Standards802.3, 802.3u, 802.3x, 802.1p/Q
  • Speed10/100Mbps
  • Connectors1 x RJ45
  • InterfacePCI
  • BUS32-bit PCI 2.2
  • DriversLinux 2.4, 2.2; Windows XP, Me, 2000, 98, NT 4.0; Novell Net
  • 10/100 Mbps Ethernet for reliable wired connectivity
  • 32-bit PCI 2.2 interface fits legacy desktop slots
  • Single RJ45 port supports Cat 5e up to 100 m
  • Broad driver support for Windows 98 through XP and Linux 2.4
  • RMON monitoring and SNMP management simplify network administration

32-bit PCI 10/100 network card

This 3Com 3C905CX-TX-M connects a desktop or server to a 10 or 100 Mbps Ethernet network through a single RJ45 port. It plugs into a 32-bit PCI 2.2 slot and includes a Managed PC Boot Agent for network booting. Driver support covers Windows 98 through XP, Linux 2.2 and 2.4 kernels, and Novell NetWare 5.x. It suits legacy hardware maintenance or period-correct retro builds.

Thermals noise and power

The card draws power directly from the PCI bus with no external connector and no onboard fan, so it adds negligible heat and produces no audible noise. Typical load stays within the slot specification, making it suitable for compact or passively cooled chassis. Wake-on-LAN is not supported, so the host cannot be powered up remotely over the network.

Build connectors and mounting

A standard low-profile bracket secures the card in a PCI slot, and the single RJ45 jack accepts Category 3, 4, 5 or 5e UTP cable up to 100 metres for either speed. The bundle includes a remote wake-up cable and a quick-start guide. SNMP management and RMON monitoring let administrators track link health and receive alerts for physical removal or power loss. Buyers needing Gigabit throughput or modern OS drivers should look elsewhere.

Highlights

  • 10/100 Mbps Ethernet for reliable wired connectivity
  • 32-bit PCI 2.2 interface fits legacy desktop slots
  • Single RJ45 port supports Cat 5e up to 100 m
  • Broad driver support for Windows 98 through XP and Linux 2.4
  • RMON monitoring and SNMP management simplify network administration

Specifications

Brand3com
Model3C905CX-TX-M
Standards802.3, 802.3u, 802.3x, 802.1p/Q
Speed10/100Mbps
Connectors1 x RJ45
InterfacePCI
BUS32-bit PCI 2.2
DriversLinux 2.4, 2.2; Windows XP, Me, 2000, 98, NT 4.0; Novell NetWare 5.x
Wake On LANNo
FeaturesOperating distance (10BASE-T): Category 3, 4, 5, 5e UTP to 100 m (328 ft)
Operating distance (100BASE-TX): Category 5, 5e UTP to 100 m (328 ft)
Standards compliance: PCI 2.1/2.2, PC99/2001, DMI 2.0s, ACPI, WfM, WOL, BIS, PXE, BOOTP, TFTP, DHCP
Managed by: Any SNMP management, including 3com Managed PC Boot Agent
RMON-1/RMON-2 monitoring helps optimize LAN performance
Remote system alerts monitor for physical removal or power failure
Package ContentsNIC with Managed PC Boot Agent
Remote wake up cable
Quick start guide
Shipping weight0.26 kg
Package size152 × 127 × 25 mm

Questions about this item

How do I install the 3Com 3C905CX-TX-M into a 32-bit PCI 2.2 slot and what step is often missed?

Power off the system, insert the card firmly into a 32-bit PCI 2.2 slot, secure the bracket screw, attach the remote wake-up cable to the motherboard header, then install the Managed PC Boot Agent driver before connecting the RJ45 cable.

What maintenance or replacement will the 3Com 3C905CX-TX-M need over time?

The card has no moving parts or user-serviceable components; only the RJ45 patch cable may wear out and should be replaced with Category 5 or 5e UTP if link errors appear at 100 Mbps.

What limit appears first on the 3Com 3C905CX-TX-M during sustained 100 Mbps traffic?

The 100 Mbps half-duplex ceiling and 32-bit PCI 2.2 bus bandwidth become the bottleneck before the 100 m Category 5 UTP distance limit is reached.

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