Gigabyte's 28-inch 4K 144Hz IPS gaming monitor pairs two HDMI 2.1 ports with a DisplayPort 1.4 (DSC) input, so it can take 4K at 120Hz from a console or 144Hz from a PC. Its USB-C port accepts a DisplayPort Alt Mode video signal and supplies 18W of power — useful for a tablet or phone, but not enough to charge a laptop. A built-in KVM switch lets one keyboard and mouse control two connected computers. The monitor includes a three-port USB 3.0 hub and a headphone jack, and it has a built-in power supply, so it takes a standard AC power cord.
Gigabyte’s 28-inch 4K 144Hz gaming monitor with dual HDMI 2.1, DisplayPort 1.4, USB-C (DP Alt, 18W), a built-in KVM, and USB 3.0 hub.
Device Information
- Manufacturer
- Gigabyte
- Release Year
- 2021
- Model Number
- M28U
- Category
- Monitor
Source: manufacturer product page · Last updated: · How we verify port data →
Available Ports
| Connector | Quantity | Power (PD) | Capabilities | Label | Notes |
|---|---|---|---|---|---|
| HDMI 2.1 (Type A – Standard) | 2 | — | — | HDMI | 4K 144Hz needs DSC or 4:2:0; PS5/Xbox Series X get 4K@120Hz at 4:2:0 (Gigabyte spec) |
| DisplayPort 1.4 | 1 | — | — | DisplayPort | DSC, 4K@144Hz |
| USB Type-C (USB 3.2 Gen 1) | 1 | 18 W | DP Alt Mode | USB-C (DP Alt, 18W) | DisplayPort Alt Mode video in + 18W PD |
| USB Type-A (USB 3.2 Gen 1) | 3 | — | — | USB-A downstream | USB 3.0 hub ports |
| USB Type-B (USB 3.2 Gen 1) | 1 | — | — | USB-B upstream | USB 3.0 hub upstream (data only) |
| 3.5mm TRS (Stereo Audio) | 1 | — | — | Headphone out | 3.5mm analog audio output |
Other Gigabyte Monitor models with the same ports
Notes & Compatibility
USB-C delivers only 18W PD (not laptop-charging). Built-in KVM switches one keyboard/mouse between the USB-C device and the USB-B-connected PC. Built-in power supply fed by a standard AC cord (AC inlet not modeled). Gigabyte’s OSD Sidekick app (monitor settings from the desktop) only works with the USB-B upstream cable connected to the PC. Over HDMI 2.1, consoles get 4K 120Hz at 4:2:0; a PC needs DSC for 4K 144Hz at 4:4:4. The built-in power supply draws up to 115W. VESA 100×100 mount.
Common questions
How many ports does the Gigabyte M28U (2021) have?
The Gigabyte M28U (2021) has 9 ports in total: 2 × HDMI 2.1 (Type A – Standard), 1 × DisplayPort 1.4, 1 × USB Type-C (USB 3.2 Gen 1), 3 × USB Type-A (USB 3.2 Gen 1), 1 × USB Type-B (USB 3.2 Gen 1) and 1 × 3.5mm TRS (Stereo Audio).
What kinds of ports does the Gigabyte M28U (2021) have?
By connector family, the Gigabyte M28U (2021) has 5 USB, 2 HDMI, 1 DisplayPort and 1 Audio.
How many USB ports does the Gigabyte M28U (2021) have?
The Gigabyte M28U (2021) has 5 USB ports: 1 × USB Type-C (USB 3.2 Gen 1), 3 × USB Type-A (USB 3.2 Gen 1) and 1 × USB Type-B (USB 3.2 Gen 1).
What video connections does the Gigabyte M28U (2021) have?
The Gigabyte M28U (2021) has 4 ports that can carry video: 2 × HDMI 2.1 (Type A – Standard), 1 × DisplayPort 1.4 and 1 × USB Type-C (USB 3.2 Gen 1). Its USB Type-C (USB 3.2 Gen 1) port supports DisplayPort Alt Mode, so video travels over the USB-C connector itself with a suitable cable or adapter.
How is the Gigabyte M28U (2021) powered?
The Gigabyte M28U (2021) takes power over 1 × USB Type-C (USB 3.2 Gen 1), rated for up to 18 W.
