1-2 CHAPTER 1: INTRODUCTION
Unless specifically indicated, the name 3C905B-TX is used 
throughout this guide to refer to both NICs.
This chapter describes the 3C905B-TX NIC features and PC 
and server requirements.
Industry-Leading Performance
The 3C905B-TX NIC provides the following performance 
features:
■ Interactive Access technology to minimize CPU utilization
■ Parallel Tasking
®
 II architecture for high throughput and 
low processor utilization
■ Full-duplex 10 Mbps and 100 Mbps support
■ Hardware IP checksum enabled for better Internet and 
intranet performance
■ Fast IP switching solution that allows you to 
cost-effectively scale internetwork performance as 
bandwidth requirements increase
■ 32-bit bus master design with full scatter gather and 
infinite bursting performance
■ Flow control (IEEE 802.1x), which optimizes performance 
in switched networks through efficient data transmissions
DynamicAccess Software
DynamicAccess
™
 software delivers intelligence at the edge of 
the network to optimize network performance and control. 
DynamicAccess features include PACE
™
 Interactive Access 
technology, dRMON (distributed RMON) support, and 
support for PACE real-time and multimedia applications.
PACE class of service drivers enable prioritization of 
multimedia and business-critical applications like video 
conferencing and distance learning. With the 3Com PACE 
drivers, you can set the class of service for each application.
The 3C905B-TX NIC ships with dRMON SmartAgent
®
 
intelligent agents that collect remote management 
information used by the Transcend
®
 Edge Monitor System. 
Together, they provide full RMON network management 
information for both switched and Fast Ethernet networks.
Book  Page 2  Thursday, April 2, 1998  9:28 AM