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What's wrong with HBR3 compatibility? I don't know what fDPMaxHBRBandwidth means. If 80 is 80 Gbps, then that means UHBR 20 but that would require Thunderbolt 5 or USB4 v2? Your logs also have fDPMaxHBRBandwidth = 80. Are there any logs that don't have fDPMaxHBRBandwidth = 80? My Macmini8,1...

You've got one too many bytes for the checksum. Remove the trailing FF. I've updated my ThunderboltUtil.sh script. ignoreuid=0 dodump=0 cd /Volumes/Work/Programming/ThunderboltProjects/ThunderboltDROM source Scripts/ThunderboltUtil.sh loadfwfile .."/Notes/from...

TDM has never worked with 5K iMacs. https://support.apple.com/en-ca/105126 TDM works with iMacs from 2009 to 2014. 2009 and 2010 iMacs use DisplayPort so they'll work with anything. For Thunderbolt iMacs (2011 to 2014), High Sierra is the best OS to use (supports audio) but later OSs may...

The slot shouldn't matter. There might be an issue with having an Nvidia and AMD card at the same time but I don't know for sure. You may need to disable the Nvidia while running macOS, maybe using an SSDT patch or something.

Maybe to provide more PCIe lanes for storage - if the PC is to be used for storage intensive tasks instead of GPU intensive tasks?

Some motherboards might have an internal USB hub. USB ports via USB hub only count as 1 (USB 2.0) or 2 (USB 3.x + USB 2.0).

Audio is digital data mixed in with the video data, probably during blanking periods. Therefore, it would be in the TMDS pins. The HDMI spec will have the details. You can connect a HDMI output to an HDMI TV using a DVI cable and a couple HDMI to DVI adapters. The audio data comes from the...

The DVI port of my GIGABYTE Z170N-Gaming 5 supports audio and 340 MHz single link (4K30). It has an i5-6500 CPU. I tested it in Windows 10 now. It say Intel Display Audio which is output to my HDMI connected display using a DVI to HDMI adapter. The Nvidia GTX 1070 also has a DVI port that...

Audio doesn't use separate pins in HDMI. HDMI/DVI adapters are passive and bidirectional. I believe DVI from Skylake iGPU is basically just HDMI and does include audio. Maybe the motherboard manufacturer used a DVI connector so they don't have to pay an HDMI license?

If there's nothing on that volume, then it should be safe to remove/delete it. Or you can keep it and just give it a more appropriate name. All volumes in an APFS container share the same space so having extra volumes doesn't take away from the other volumes in the same APFS container.

That APFS container has 2 Preboot volumes. Disk disk10s8 has the Preboot role so it is probably the real Preboot volume. Mount disk10s3. What files and folders are on that disk? Compare that with what's on disk10s8 which is mounted at /System/Volumes/Preboot If disk10s3 is not important...

Disk Utility.app normally doesn't show Preboot volumes even if they are mounted. Provide the asked for information or use https://gist.github.com/joevt/a99e3af71343d8242e0078ab4af39b6c

Are you sure it's a preboot volume? diskutil list diskutil apfs list mount

Try the utility at https://forums.macrumors.com/threads/high-sierra-booting-possibly-corrupts-newer-systems-fix-description-and-a-boot-picker-renamer.2415320/ It will check all your preboot volumes and let you rename the labels. It also fixes issues caused by running High Sierra.

The table doesn't take into account the encoding of the bits on the wire. For example, USB 3.0 uses 8b/10b while USB 3.1 Gen 2 uses 128b/132b. https://en.wikipedia.org/wiki/USB4 USB 3.0, USB 3.1 Gen1, USB 3.2 Gen1x1 is 4 Gbps. USB 3.2 Gen1x2 is 8 Gbps. USB 3.1 Gen2, USB 3.2 Gen2x1 is 9.7 Gbps...

DP-type C (not Thunderbolt) can only do 4K60 for an LG UltraFine 5K. You can create a custom timing to do 5K39. Thunderbolt is required for 5K60.

Apple does not supply Winzip.app. Perhaps you installed it from the app store?

Use diskutil list to list all partitions. Find the EFI partition device name, example: disk2s1 Then mount the EFI partition like this: diskutil mount disk2s1 Use this command to find where it was mounted: mount | grep disk2s1 For example: /Volumes/EFI Then open the EFI partition in the Finder...

Right. For Titan Ridge, people use a wire from pin 3 to Force Power but Alpine Ridge doesn't have enough voltage on Pin 3 so an external 3.3V source is required. #1,047

Download the manual for your motherboard and search for Thunderbolt. In the sample below, pin 1 is on the Botton left of the header. Use #1,047 to find pin 1 of the 5 pin cable of the GC-ALPINE RIDGE or GC-TITAN RIDGE. Maybe use a continuity tester of a multimeter to find the ground (pin 5) of...