DisplayLink Forum - View Single Post - HDMI Not working with External Display on MacOS

settsjamb · 08-21-2025, 01:37 PM

I have the exact, same issue, and similarly it's been going on a long time.

I have a VisionTek VT4510 that I primarily use without issue with my Windows computer and two external HDMI monitors. Trying to use it with my Mac, however, would cause it to power cycle, connecting and disconnecting the dock repeated. I'm now in the position of needing the Mac hookup to work. I reinstalled the driver, updated to Sequoia, clean-deleted using the cleaner tool, reinstalled the updated Sequoia driver, and still the same issue. It's not the USB cable, which I have repeatedly switched out and which otherwise works with Windows. DisplayLink Manager shows the displays repeatedly connecting and disconnecting.

<strike>Now, because I need the Mac to work and because I've already sunk several hours into trying to get the VT4510 to work, I decided to purchase another DisplayLink dock. Out of the box, this brand new Satechi Thunderbolt 4 has the same behavior described by OP. The HDMI monitors are all black. The dock does not power cycle, but is also not recognized by the DisplayLink Manager as being connected.</strike>

EDIT: Nevermind, the Satechi dock works great. I had the USB cable hooked up wrong as the diagram shows the computer hookup USB on the front/back but the actual port is on the side. Pretty sure this is a dock hardware issue.

Intel Mac 16-inch, 2019

08-21-2025, 01:37 PM	#3
settsjamb Junior Member Join Date: Aug 2025 Posts: 1	I have the exact, same issue, and similarly it's been going on a long time. I have a VisionTek VT4510 that I primarily use without issue with my Windows computer and two external HDMI monitors. Trying to use it with my Mac, however, would cause it to power cycle, connecting and disconnecting the dock repeated. I'm now in the position of needing the Mac hookup to work. I reinstalled the driver, updated to Sequoia, clean-deleted using the cleaner tool, reinstalled the updated Sequoia driver, and still the same issue. It's not the USB cable, which I have repeatedly switched out and which otherwise works with Windows. DisplayLink Manager shows the displays repeatedly connecting and disconnecting. <strike>Now, because I need the Mac to work and because I've already sunk several hours into trying to get the VT4510 to work, I decided to purchase another DisplayLink dock. Out of the box, this brand new Satechi Thunderbolt 4 has the same behavior described by OP. The HDMI monitors are all black. The dock does not power cycle, but is also not recognized by the DisplayLink Manager as being connected.</strike> EDIT: Nevermind, the Satechi dock works great. I had the USB cable hooked up wrong as the diagram shows the computer hookup USB on the front/back but the actual port is on the side. Pretty sure this is a dock hardware issue. Intel Mac 16-inch, 2019 Last edited by settsjamb; 08-21-2025 at 02:03 PM.