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B-18 APPENDIX B: TECHNICAL SUPPORT
What should I do if a yellow
exclamation point appears next
to the 3C905B-TX adapter
name?
1 In the Device Manager, double-click
Other Devices.
2 Click PCI Ethernet Controller or the duplicate
3C905B-TX NIC entry.
3 Click Remove.
4 Restart your PC.
What is the hardware IP header
checksum?
The header checksum is a field in the IP header.
When the 3C905B-TX adapter receives IP data, it
computes the IP header checksum, and if an
error occurred, the packet is dropped and is not
passed to the protocol stack. By computing the
CRC through hardware, the adapter can increase
the performance of IP traffic and reduce CPU
processing required by the protocol stack.
To avoid having the CRC computed twice (once
in the hardware and again in the software by the
protocol stack), make sure that your IP protocol
does not compute the CRC or if it does, disable
that function.
Does the 3C905B-TX adapter
support NetWare versions 3.11
or 4.0x?
The 3C905B-TX adapter does not support
NetWare versions 3.11 or 4.0x. These versions
require the use of a server driver that conforms
to the HSM 3.2 specification. 3Com no longer
develops NetWare server drivers to the HSM 3.2
specification.
What does Remote Wake-Up
do?
Remote Wake-Up powers up a PC remotely from
standby or suspend mode using a wake-up packet
that is sent through the LAN. With this method, no
one has to be at the PC to turn it on.
Remote Wake-Up is also known as Wake on LAN.
How can I tell if my PC supports
Remote Wake-Up?
Check to see if there is a 3-pin header for the
Remote Wake-Up connector located on the PC
motherboard and if your PC has a BIOS that
supports wake-up events based on LAN events.
If you are unsure, contact your PC vendor for
further details.
What can wake up the
3C905B-TX adapter?
The adapter can be awakened by a Magic Packet
wake-up packet sent by management software,
or by connecting or disconnecting the TP cable.
(continued)
Table B-2 Frequently Asked Questions (continued)
Question Answer