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3Com 3C509B ETHERNET 10MBPS BNC AUI ISA

3Com 3C509B ETHERNET 10MBPS BNC AUI ISA
3Com 3C509B ETHERNET 10MBPS BNC AUI ISA
OverviewThe 3Com 3C509B Ethernet 10Mbps BNC AUI ISA card delivers reliable, low-cost networking for legacy systems that require a classic 10BASE2 (thin coax) or AUI interface. Designed for ISA bus slots, this adapter provides a straightforward upgrad... Read More
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$33.95
  • In Stock: 1
  • Manufacturer: 3Com
  • Model or Part: 3C509B
  • Condition: New
  • Weight: 1.00lb
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Overview
The 3Com 3C509B Ethernet 10Mbps BNC AUI ISA card delivers reliable, low-cost networking for legacy systems that require a classic 10BASE2 (thin coax) or AUI interface. Designed for ISA bus slots, this adapter provides a straightforward upgrade path for older workstations, industrial controllers, and embedded platforms that still rely on proven Ethernet technology. Its compact form factor and robust construction make it ideal for environments where stability and compatibility are paramount.

Key Features

  • Supports 10Mbps Ethernet over BNC (10BASE2) and AUI connectors
  • ISA bus interface for easy installation in legacy PCs and industrial boards
  • Plug-and-play operation with standard driver support for major operating systems
  • Low power consumption and heat generation
  • Durable metal chassis for enhanced protection against EMI and physical stress

Technical Specifications

  • Manufacturer: 3Com
  • Model/Part Number: 3C509B
  • Bus Type: 8-bit ISA (16-bit compatible)
  • Network Speed: 10Mbps (half-duplex)
  • Connector Types: BNC (10BASE2) and AUI (transceiver)
  • Operating Temperature: 0 to 55 degrees C (32 to 131 degrees F)
  • Power Supply: +5V DC from ISA slot
  • Dimensions: Standard ISA card size (approx 10.5 x 4.2 inches)

Applications
This card is perfect for:

  • Legacy desktop computers that need network connectivity in older office environments
  • Industrial automation controllers that rely on thin coax Ethernet for field devices
  • Embedded systems and test equipment where a compact, reliable Ethernet interface is required
  • Educational labs and training facilities that maintain historic hardware for instructional purposes
  • Any scenario where a stable 10Mbps link is sufficient and modern RJ45 infrastructure is not available

Upgrade your older hardware with the 3Com 3C509B and enjoy proven Ethernet performance without the need for costly system replacements.