This entry OLED combines true blacks with fast motion response, at a price point that makes OLED accessible. 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.
2024 LG entry-level OLED B4 with α8 AI Processor, 120Hz gaming, Dolby Vision, webOS 24. First B-series with four HDMI 2.1 ports.
Device Information
- Manufacturer
- LG
- Release Year
- 2024
- Model Number
- OLED B4 (e.g., OLED55B4PUA / OLED55B4PSA; sizes 48/55/65/77/83 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, QMS |
| HDMI 2.1 (Type A – Standard) | 1 | — | — | HDMI 2 | 4K@120Hz, VRR, ALLM, QMS |
| HDMI 2.1 (Type A – Standard) | 1 | — | — | HDMI 3 | eARC, 4K@120Hz, VRR, ALLM, QMS |
| HDMI 2.1 (Type A – Standard) | 1 | — | — | HDMI 4 | 4K@120Hz, VRR, ALLM, QMS |
| USB Type-A (USB 2.0) | 2 | — | — | — | 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 |
| RF Antenna Input (Coaxial) | 1 | — | — | — | Region-dependent (often 1 in NA, 2 in EU/UK) |
Other LG TV models with the same ports
Notes & Compatibility
HDMI: 4x HDMI 2.1 (4K@120Hz, VRR, ALLM, QMS on all 4 ports). eARC: HDMI 3. USB: 2x USB 2.0 Type-A. Ethernet is 10/100Mbps. G-Sync Compatible, FreeSync Premium. Wi-Fi 5. The panel tops out at 120Hz: unlike the C4 there is no 144Hz PC mode, so any certified Ultra High Speed HDMI cable covers every mode it accepts. Dolby Vision gaming at 4K@120Hz is supported. The eARC port passes DTS as well as Dolby Atmos to a soundbar or receiver. An RS-232C mini-jack for control systems sits on the rear panel (not modeled as a port). Bluetooth audio out and WiSA speakers are wireless alternatives to an eARC soundbar.
