HT205956: If the Ethernet connection on your Mac stopped working recently

Learn about If the Ethernet connection on your Mac stopped working recently
Dogfenceguy

Q: I have version 3.28.2 and my ethernet port is still not working. Anyone else? How do I resolve? OS X 10.11.5. iMac 21.5 2013

iMac 2013 WiFi works, but slow (25 - 40 Mbps out of potential 250+ Mbps. Somedays as fast as 179 Mbps wifi, but not lately) Poor router positioning slows me down and very Hard to change location of router. Ethernet cable is good. Cable used to work with iMac but now it does not. Not sure if hardware problem, or if OS updates caused it. Same cable still works with macBook and older iMac. 270 Mbps with cable connected to MacBook. Detailed visual inspection of port does not reveal bent pins. Looks new.  Changed Router ports. Changed cables. Reset Router. Wondering if El Capitan or other updates could have shut off port? How to reactivate?

OS X El Capitan Vers 10.11.5

iMac 21.5-uh 213

Processor 2.7 GHz Intel Core i5

8 GB 1600 MHz DDR3

 

Broadcom 57766-A1:

 

  Name: ethernet

  Type: Ethernet Controller

  Bus: PCI

  Vendor ID: 0x14e4

  Device ID: 0x1686

  Subsystem Vendor ID: 0x14e4

  Subsystem ID: 0x1686

  Revision ID: 0x0001

  Link Width: x1

  BSD name: en0

  Kext name: AppleBCM5701Ethernet.kext

  Firmware version: 57766a-v1.13, 0x010e63c4

  Location: /System/Library/Extensions/IONetworkingFamily.kext/Contents/PlugIns/AppleBCM570 1Ethernet.kext

  mDNS offload capable: 68:5b:35:7e:f8:ff

  Version: 10.2.0

iMac (21.5-inch, Late 2013), OS X El Capitan (10.11.5)

Posted on Jun 28, 2016 7:37 AM