Wired Network Connection Dropping

[pls1960]

My wired network keeps dropping.  Most of the time it disconnects:

Log Name: System
Source: e1cexpress
Date: 12/09/2020 09:55:05 AM
Event ID: 27
Task Category: None
Level: Warning
Keywords: Classic
User: N/A
Computer: Testudo
Description:
Intel(R) 82579LM Gigabit Network Connection
Network link is disconnected.

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="e1cexpress" />
<EventID Qualifiers="40964">27</EventID>
<Level>3</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2020-12-09T14:55:05.177653900Z" />
<EventRecordID>1248452</EventRecordID>
<Channel>System</Channel>
<Computer>Testudo</Computer>
<Security />
</System>
<EventData>
<Data>
</Data>
<Data>Intel(R) 82579LM Gigabit Network Connection</Data>
<Binary>0000040002003000000000001B0004A00000000000000000000000000000000000000000000000001B0004A0</Binary>
</EventData>
</Event>

....then reconnects 3-4 seconds later:

Log Name: System
Source: e1cexpress
Date: 12/09/2020 09:55:09 AM
Event ID: 32
Task Category: None
Level: Information
Keywords: Classic
User: N/A
Computer: Testudo
Description:
Intel(R) 82579LM Gigabit Network Connection
Network link has been established at 1Gbps full duplex.

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="e1cexpress" />
<EventID Qualifiers="24580">32</EventID>
<Level>4</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2020-12-09T14:55:09.315890600Z" />
<EventRecordID>1248455</EventRecordID>
<Channel>System</Channel>
<Computer>Testudo</Computer>
<Security />
</System>
<EventData>
<Data>
</Data>
<Data>Intel(R) 82579LM Gigabit Network Connection</Data>
<Binary>0000040002003000000000002000046000000000000000000000000000000000000000000000000020000460</Binary>
</EventData>
</Event>

This type of scenario mostly goes unnoticed.  However, the reconnect often does not happen requiring a manual intervention.

I have the latest BIOS, checked the cable and no router problems with numerous other NIC devices connected.

Help!