Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

iLondoner

macrumors 6502
Original poster
I am having problems connecting a BMW Navigator VI (rebadged Garmin) to my Macbook Pro 2021 with USB-C ports. When I use the cable I've always used (Micro-USB to USB-A) and connect to my iMac 2019 it works perfectly. When I connect to the Macbook Pro using either a USB-A to USB-C converter cable or A to C dongle, it doesn't work.

According to Garmin, "Macs with only USB-C Ports: These models will require the use of a USB hub or adapter for connection," see https://support.garmin.com/en-GB/?faq=Pu8dqQaIFY5hq2dMWuDix7

But I already am using an adapter?? Any ideas?

(Background: I have already tried the workaround suggested by Garmin which is to change the device to mass storage mode:

1. Start device by itself and go to Volume Screen.
2. Press the upper right hand corner of screen for 10 seconds.
3. The Developers Screen will pop up
4. Scroll down to MTP SETTINGS
5. Change from AUTO DETECT to MASS STORAGE
6. Shut down the device and connect to PC
7. It should now connect in mass storage mode.

But it doesn't.)
 
In System Information, under USB - is your Mac seeing it there? Also, if you're running Ventura (on an Apple Silicon Mac) you usually get prompted to allow the USB connection to the machine, did that happen?
 
In addition to the suggestion above, link the details of the cables you are using. There is the possibility that the cable you have is only for use to charge devices in which case the data lines (D+ / D-) will be absent to save on cable production costs. What you require is a USB 2.0 High Speed (recommended; 480 Mbps rated) cable with the suitable ends for your project.

Suggestions are to review the datasheet from firms like CUI, Tripplite who will offer the actual wiring diagram of the cable. Only then can you be sure that the cable is 'fully loaded' to permit not only power but also data transfers.
 
As an Amazon Associate we earn from qualifying purchases.
I'm still using an Intel machine but look in System Settings, Privacy and Security, Security... try changing it to allow all USB connections?
 
  • Like
Reactions: iLondoner
Fast delivery from Amazon for the new 480 Mbps Micro-USB to USB-C cable. No change unfortunately.

EDIT: Just tried connecting to my wife's Macbook Air 2020 which also has USB-C as the only connection, and it recognises the BMW Navigator VI. I've then gone back to the original cable with adapter connection and that works fine as well, so it wasn't a cable problem in the first case.

Her system is Intel Core 5 based and is running MacOS Monterey 12.6.3; my system is M1 Pro based and is running MacOS Ventura 13.0.1. I see there's an upgrade available to 13.4 so will install and report back.
 
Last edited:
>"Can you confirm that this same USB Type C port on your macbook functions with another product?"
Yes, but I believe they are USB 3.0 devices.

I've now upgraded to Ventura 13.4 and the USB-C ports finally work as they should.

I had 'check for updates' ticked but it seems all that does is check, it doesn't actually install MacOS updates. Duh.

Anyway, everything is sorted, apologies for time wasting and thanks to those who responded.
 
Last edited:
I have similar issue with SSD enclosure which came with USB-C to micro-USB cable (the wide one with more pins). Worked on Intel MBP great. Does not work on M1 MBP when plugged in the USB-C on the computer. When plugged in dock in USB-C or in USB-A (with USB-A to USB-C converter), works great. This is one of those expensive USB-C docks which provide HDMI, display port, bunch of USB-C and USB-A ports and charges the MBP.
There is something different in M1/M2 USB-C ports which prevent this arrangement. I tried replacing the cable with different ones (I tried two) and it still did not work.
I gave up and bought different SSD drive.
 
  • Like
Reactions: iLondoner
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.