How to connect a mDP Mini Display Port 4K 60Hz / 30 Hz output from a Tablet PC to a Portable 13 or 15" 2K/ 3K/ 4K Display with only USB-C support?
I have a Surface Pro 3 and our family has 2 more S Pro 4 and 5.
Typically we used to use mDP to DP or mDP to HDMI adapters etc. Here I am wondering whats possibly a way to do this?
I am wondering how their output could be connected to such a portable monitor/ display?
Use an active bidirectional cable like this https://www.apple.com/shop/product/HLR62ZM/A/moshi-usb-c-to-displayport-cable and a mini dp to dp adapter. This assumes the display is not powered by usb-c
I read about bi-directional stuff but did not find a concrete article on this matter until this - and I will update this answer as I find and learn more on the subject of evolving HDMI/ DP / USB-C and related Display connectivity.
Sometimes the best answers are harder to come by on a Google Search and never show up until you dig, or stumble randomly upon them on the web.
Here's a detailed and elaborate answer from Dan Charlton's Tech Blog, "Bi-directional USB-C -> DisplayPort & HDMI cables":
Bi-directional USB-C DisplayPort cables monitor, USB-C 1 Comment
May 10, 2020
If you search Amazon or another major retailer for USB-C -> DisplayPort adapters, there are dozens to choose from. >99% are single direction with the source/host PC intended to be connected via USB-C and the destination/monitor to be connected with DisplayPort.
What if you need to go the other way? For example, suppose you have a USB-C-only monitor. How do you connect that to a PC that only has DisplayPort?
Get the right cable that supports bi-directional or reverse signaling. These cables are considerably more expensive than typical cables since they have several integrated circuits inside to handle both directions.
For example, the StarTech cables combine a Via VL170, a Chrontel CH7213C, and a TI TUSB544.
DP 1.4 CABLES/ADAPTERS (FULL SIZE DP)
With DP 1.4 / HBR3 support, these are the most capable and future-proof offerings:
Club 3D CAC-1557 8K60 (2m length) (~$35) Infinnet 8K-ready (2m length) (~$40) Infinnet 8K-ready (0.5m length) (~$30) Moshi 99MO084102 5K60 (1.5m length) (~$45) Startech CDP2DP141MBD 8K30 (1m length) (~$37) Startech CDP2DP142MBD 8K30 (2m length) (~$40)
DP 1.2 CABLES/ADAPTERS (FULL SIZE DP)
AmazonBasics UTC-DP-B-L (1m or 2m lengths) (~$16) Startech CDP2DP1MBD 4K60 (1m length) (~$33) Startech CDP2DP2MBD 4K60 (2m length) (~$33) VisionTek 901288 (2m length) (~$30)
SINGLE DIRECTION (REVERSE) ONLY:
DeLock DP -> USB-C adapter 63928 (~$30) (20cm length) Belkin cable for Huawei VR (~$95) (DP + 2x USB-A -> USB-C)
WHAT ABOUT MINIDP?
Some laptops like Surface only have a miniDP receptacle. The simplest approach for these is to use a MiniDP->DP adapter in series with one of the full-size DP cables as follows:
[PC] –> [MiniDP->DP adapter] –> [DP->USB-C cable] –> [USB-C monitor]
In general, multiple adapters/cables in series is not recommend for inaccessible or mission-critical systems. But for most home users this will be just fine.
Another approach is this Wacom device:
Wacom Link adapter ACK42719 (~$60) (mDP + USB 2.0 -> USB-C)
WHAT ABOUT HDMI?
Several brands offer HDMI -> USB-C or HDMI -> DP cables but they are single-direction aka “reverse” only:
Wacom Link Plus adapter ACK42819 (~$75) (single direction only) .. combines miniDisplayPort or HDMI + USB 2.0 into USB-C Generic ebay cable HDMI + USB 2.0 -> USB-C (~$50) (single-direction only)
Visiontek 900822 HDMI -> DP ($35) (single direction only) Cable Matters 103069 HDMI -> DP ($35) (single direction only) .. HDMI->DP with USB power
RESOURCES:
