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Mac Proとして知られるデスクトップMacシリーズの2013年版新モデルです。

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Mac Pro 2013 - USB port not working after CMOS battery replacement

I have a 2013 Mac Pro cylinder. I was facing issue with powering it on, after multiple tries I used to successfully make it work. Later I realized that there is a problem with the CMOS battery.

Now after replacing the CMOS battery, the unit is starting but all the 4 USB ports have stopped working.

Thunderbolt ports, HDMI port & LAN ports are working perfectly fine.

The USB is drawing the power but is unable to detect any devices including external keyboard and mouse.

I'm able to access the machine with a screen share option from my other Mac.

Under system report, this is what I'm getting

USB 2.0 Bus:

  • Host Controller Driver: AppleUSBEHCIPCI
  • PCI Device ID: 0x1d26
  • PCI Revision ID: 0x0006
  • PCI Vendor ID: 0x8086

Hub:

  • Product ID: 0x0024
  • Vendor ID: 0x8087  (Intel Corporation)
  • Version: 0.00
  • Speed: Up to 480 Mb/s
  • Location ID: 0x1d100000 / 1
  • Current Available (mA): 500
  • Current Required (mA): 0
  • Extra Operating Current (mA): 0
  • Built-In: Yes

BRCM20702 Hub:

  • Product ID: 0x4500
  • Vendor ID: 0x0a5c  (Broadcom Corp.)
  • Version: 1.00
  • Manufacturer: Apple Inc.
  • Location ID: 0x1d110000

Bluetooth USB Host Controller:

  • Product ID: 0x828d
  • Vendor ID: 0x05ac (Apple Inc.)
  • Version: 1.50
  • Manufacturer: Apple Inc.
  • Location ID: 0x1d113000

Can someone please help me with this




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What does a USB power meter tell you? USB Mini Voltmeter

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I’m suspecting the IO board data cable maybe not making contact on one or more pins. Go back to Step 16 here Mac Pro Late 2013 CMOS Battery Replacement

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I again dissembled the whole thing and fitted everything back again properly, still no luck.

I used the app "Ampere" on my phone to check the current flow.

It's showing around 510mA & 3.7V

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All you've proved is the USB ports power services are working. We still don't know if the data lines are working.

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Hash さん、ありがとうございました!
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