This is not making sense to me - the USB-C alt-DP capability doesn't seem to substantially run up the price of the laptops it can be found in. ???
I'll probably just get a 2-port USB-C expansion card (without the alt-DP capability) and since I'd like to have HDMI output capability, I'll get a DisplayPort to HDMI adapter to plug into the second full size DP port on the rear panel. But I'm curious as to the reason desktop expansion panels with USB-C alt-DP capability are rare.
???
Thanks, All!
Probably so you can buy a high-end video card to play video games...............
Pingarootie!............
The headline reminded me of a line from die hard 2. “We have a new SOP for DOAs from the FAA.”
I’m not an expert in the precise nature of what you’re trying to do, but I found numerous cards that appear to do what you want by just typing “PCI-e to usb-c” into Google.
Newegg seems to have the exact item you’re looking for, priced at $40.
I was trying to connect a computer-based USB-C port to a MIDI keyboard earlier in the year and discovered something that frankly shocked me: once the cord length is greater than 6 feet, the data connection utterly fails.
I tried several different cables (I really wanted a 15-to-20 foot cord... simply for reasons of geography in my workspace), but they all failed to deliver data between the computer and the MIDI board. Only when I got to 6 feet did it work.
Mind you, if all you need to do is charge a device with USB-C, then you’re fine... 10 feet, 20 feet... no problem. Also, USB-A (with lower USB protocol versions) also work at longer lengths. But not USB-C and definitely not at the faster data speeds of USB2.0 and USB2.1 or higher.
Check your cables. Not all cables can carry the voltage and longer cables have sufficient voltage loss that a monitor won’t power on. DisplayPort has standards for stability and a LOT of stuff on the market is trash. Check the DisplayPort website for registered and supported vendors for their 1.2 standard.
USB was initally a slow transfer or connection. High volumes of data required for video might overload the transfer rate. If you don’t have the software or drivers, you don’t just get this by plugging in a USB without them. There are different standards for video and sound, as well as documents or pictures. Without the correct software and/or drivers a computer cannot just product or translate the files.
USB is not a sound device. USB is not a video device. USB is not always a storage device, or just a power device. USB is a standard connection. Everything else depends on the cable or the software.
For hubs you need to get smarter cables.
You might want to peruse this thread
https://www.reddit.com/r/UsbCHardware/comments/hpkne6/add_usbc_wdp_altmode_to_desktop_pc/
I like Displayport, I’ve got a couple of Samsung monitors with both DP and HDMI inputs. DP outputs can drive an HDMI monitor (usually) but HDMI ports (AFAIK) never drive a DP monitor.
I’ve used a couple of different USB-A docks with HDMI and VGA output options, both got flakey after a while.
I picked up a Kensington brand USB-A to DP gizmo that isn’t perfect but works fine, the laptop is from 2013 and the HDMI port fell out of the CPU 8 or more years ago. Since I swapped in an SSD, I haven’t had the Kensington go inactive and needing to be reset (unplugged then plugged back in), and that typically would happen a few times a week.
:^)
You probably have already done this. But I would be doing intelligent searches on eBay for the card of your dreams. Used might work out for your oddball request. eBay has loads and loads of inventory, due to the slowed down economy.
After eBay.... search Amazon too. But eBay is numero uno.