[Updated 2020/12/03 with 6 new cables]
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 sink/monitor to be connected with DisplayPort.
What if you need to go the other way? For example, how do you connect a USB-C-only monitor 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:
- Cable Creation CD0738 (2m length) (~$20)
- Club 3D CAC-1557 8K60 (2m length) (~$35)
- Delock 85813 (1.5m length) (~$60)
- Infinnet 8K-ready (0.5m length) (~$30)
- Infinnet 8K-ready (2m length) (~$40)
- Moshi 99MO084102 5K60 (1.5m length) (~$45)
- Startech CDP2DP141MBD 8K30 (1m length) (~$37)
- Startech CDP2DP142MBD 8K30 (2m length) (~$40)
- VisionTek 901288 (2m length) (~$30)
DP 1.2 cables/adapters (full size DP)
- AmazonBasics UTC-DP-B-L (1m or 2m lengths) (~$16)
- MonoPrice 139240 (2m length) (~$30)
- Startech CDP2DP1MBD 4K60 (1m length) (~$33)
- Startech CDP2DP2MBD 4K60 (2m length) (~$33)
- Tripp Lite U444-066-DP-BD (2m length) (~$33)
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. Some include a USB A port to power portable USB-C monitors. Many of these adapters are based on the Lontium LT6711 chipset.
HDMI – > USB-C
- Generic ebay cable HDMI + USB 2.0 -> USB-C (~$50)
- UGreen CM323 (~$35)
- Siig CB-H21711-S1 (~$46)
- DeLock 63251 HDMI + USB -> USB-C (~$55)
HDMI -> DP
- Cable Matters 103069 ($35)
- Foinnex H-DPF ($33)
- Visiontek 900822 ($35)
- DeLock 63206 ($38)
- Wacom Link Plus adapter ACK42819 (~$75)
Let me know in the comments if you know of any other brands of bi-directional cables/adapters and what you’re using them for.