ASUS's 4K QD-OLED gaming monitor is built around DisplayPort 2.1 UHBR20 (80Gbps) — the only input that handles 4K@240Hz natively without DSC. The two HDMI 2.1 ports max out at 40Gbps for consoles and the USB-C input carries DP Alt Mode video plus 90W of laptop charging. Note the configurable USB-C mode: 'USB 3.2' reserves two lanes for SuperSpeed data, while 'USB 2.0' frees all four lanes for DisplayPort traffic to deliver 4K@240Hz over USB-C.
ASUS’s 4K QD-OLED gaming display with DisplayPort 2.1 UHBR20, two HDMI 2.1 ports, and USB-C with 90W charging.
Device Information
- Manufacturer
- ASUS
- Release Year
- 2024
- Model Number
- PG27UCDM
- Category
- Monitor
Source: manufacturer product page · Last updated: · How we verify port data →
Available Ports
| Connector | Quantity | Power (PD) | Capabilities | Label | Notes |
|---|---|---|---|---|---|
| DisplayPort 2.1 | 1 | — | — | DisplayPort 2.1 UHBR20 | 80Gbps — 4K@240Hz uncompressed |
| HDMI 2.1 (Type A – Standard) | 2 | — | — | HDMI 2.1 | 40Gbps, 4K@120Hz with VRR |
| USB Type-C (USB 3.2 Gen 2) | 1 | 90 W | DP Alt Mode | USB-C upstream | DP Alt Mode video + 90W PD charging |
| USB Type-B (USB 3.2 Gen 1) | 1 | — | — | USB-B upstream | USB hub upstream (data only) |
| USB Type-A (USB 3.2 Gen 1) | 3 | — | — | USB-A downstream | 5Gbps hub downstream ports, KVM-switchable |
| 3.5mm TRS (Stereo Audio) | 1 | — | — | Headphone out | 3.5mm stereo headphone output |
Notes & Compatibility
DisplayPort 2.1 UHBR20 is the only path to 4K@240Hz uncompressed. USB-C carries 90W PD plus DP Alt Mode. Built-in KVM switches USB hub between two hosts. Set USB-C to ‘USB 2.0’ to free all four lanes for DisplayPort and unlock 4K@240Hz over USB-C.
Common questions
How many ports does the ASUS ROG Swift PG27UCDM 27-inch OLED (2024) have?
The ASUS ROG Swift PG27UCDM 27-inch OLED (2024) has 9 ports in total: 1 × DisplayPort 2.1, 2 × HDMI 2.1 (Type A – Standard), 1 × USB Type-C (USB 3.2 Gen 2), 1 × USB Type-B (USB 3.2 Gen 1), 3 × USB Type-A (USB 3.2 Gen 1) and 1 × 3.5mm TRS (Stereo Audio).
What kinds of ports does the ASUS ROG Swift PG27UCDM 27-inch OLED (2024) have?
By connector family, the ASUS ROG Swift PG27UCDM 27-inch OLED (2024) has 5 USB, 2 HDMI, 1 DisplayPort and 1 Audio.
How many USB ports does the ASUS ROG Swift PG27UCDM 27-inch OLED (2024) have?
The ASUS ROG Swift PG27UCDM 27-inch OLED (2024) has 5 USB ports: 1 × USB Type-C (USB 3.2 Gen 2), 1 × USB Type-B (USB 3.2 Gen 1) and 3 × USB Type-A (USB 3.2 Gen 1).
What video connections does the ASUS ROG Swift PG27UCDM 27-inch OLED (2024) have?
The ASUS ROG Swift PG27UCDM 27-inch OLED (2024) has 4 ports that can carry video: 1 × DisplayPort 2.1, 2 × HDMI 2.1 (Type A – Standard) and 1 × USB Type-C (USB 3.2 Gen 2). Its USB Type-C (USB 3.2 Gen 2) port supports DisplayPort Alt Mode, so video travels over the USB-C connector itself with a suitable cable or adapter.
How is the ASUS ROG Swift PG27UCDM 27-inch OLED (2024) powered?
The ASUS ROG Swift PG27UCDM 27-inch OLED (2024) takes power over 1 × USB Type-C (USB 3.2 Gen 2), rated for up to 90 W.
