This 2020 flagship was the first to bring 4K@120Hz gaming to mainstream OLED, a game-changer at launch. All four HDMI ports support full 2.1 specs (48Gbps), enabling 4K@120Hz, VRR, and ALLM on any input. eARC runs on HDMI 2 for lossless audio return to a soundbar. For the 2.1 ports, use Ultra High Speed HDMI cables — standard cables top out at 18Gbps. Here's every port and the cables you'll need.
2020 LG OLED CX with α9 AI Processor Gen3, first 48-inch OLED, 4K@120Hz gaming. Popular gaming TV.
Device Information
- Manufacturer
- LG
- Release Year
- 2020
- Model Number
- OLED CX (e.g., OLED65CXPUA; sizes 48/55/65/77 available)
- Category
- TV
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) | 1 | — | — | HDMI 1 | 4K@120Hz, VRR, ALLM |
| HDMI 2.1 (Type A – Standard) | 1 | — | — | HDMI 2 | eARC, 4K@120Hz, VRR, ALLM |
| HDMI 2.1 (Type A – Standard) | 1 | — | — | HDMI 3 | 4K@120Hz, VRR, ALLM |
| HDMI 2.1 (Type A – Standard) | 1 | — | — | HDMI 4 | 4K@120Hz, VRR, ALLM |
| USB Type-A (USB 2.0) | 3 | — | — | — | For media playback |
| Optical TOSLINK (S/PDIF) | 1 | — | — | — | Digital audio output |
| RJ-45 (100BASE-TX Fast Ethernet) | 1 | — | — | — | 10/100 Mbps: LG specifies 10BASE-T/100BASE-TX for webOS TVs, so wired tops out around 94 Mbps |
| 3.5mm TRS (Stereo Audio) | 1 | — | — | — | Headphone output |
| RF Antenna Input (Coaxial) | 1 | — | — | — | Antenna/cable |
Other LG TV models with the same ports
Notes & Compatibility
HDMI: 4x HDMI 2.1 (40Gbps, 4K@120Hz, VRR, ALLM on all 4 ports). eARC: HDMI 2. USB: 3x USB 2.0 Type-A. No DTS support. G-Sync Compatible, FreeSync.
