Mac Pro (Mid 2010) Symptom Charts — Ethernet Port/Device Issue 61
2010-08-31
Communications
Follow the steps in the order indicated below. If an action resolves the issue, retest the
computer to verify. If the issue persists after retesting, return to step 1.
Ethernet Port/Device Issue
Unlikely cause: power supply, fans, speaker, optical drives, hard drives, processor board, front
panel board, memory
Quick Check
Symptom Quick Check
Ethernet Port/Device Issue
• One or both Ethernet ports
may not function
• No Ethernet device present
• Unable to access network
resources
• Ethernet device shows no
connection
• Ethernet device unable to get
an IP address
• Slow network performance
1. Check the network cable for damage, try a
known good Ethernet cable – CAT5 or better
recommended for 100Mbps+ connections.
2. Check both Ethernet ports on Mac and wall/
switch for dust, debris, damage or bent pins.
3. Ensure distance from networking infrastructure is
less than 300 feet / 105 meters.
4. Verify both Ethernet ports, cable and network
hardware with a known good computer. Isolate
rewall, MAC address ltering or hardware access
control devices.
5. Check system logs. Isolate OS by starting up
from original install media (10.6.x) or compatible
known good OS.
Deep Dive
Check Result Action Code
1. Visually inspect Ethernet
connector to ensure all pins
will make physical contact with
Cat5 network cable.
Yes Ethernet interface contacts
are good to go. Go to step 2.
No Pins are damaged or bent at,
replace backplane board.
M10
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