This 4K HDR disc player uses a dual-HDMI design so you can keep video and audio on separate cables: HDMI OUT 1 carries 4K HDR video plus audio (HDMI 2.0a, HDCP 2.2, Dolby Vision), while HDMI OUT 2 is audio-only for older AV receivers that can't pass 4K. An optical TOSLINK output adds another digital audio path. Wired networking runs over a 10/100 Ethernet port rather than gigabit, and a front USB 2.0 port plays back media files. It powers from a figure-8 mains cord.
4K HDR Blu-ray player with dual HDMI (one audio-only), optical TOSLINK, 10/100 Ethernet, front USB and Dolby Vision support.
Device Information
- Manufacturer
- LG
- Release Year
- 2018
- Model Number
- UBK90
- Category
- UHD Blu-ray Player
Available Ports
| Connector | Quantity | Label | Notes |
|---|---|---|---|
| HDMI 2.0b (Type A – Standard) | 1 | HDMI OUT 1 (Video + Audio) | 4K HDR / Dolby Vision, HDCP 2.2 (HDMI 2.0a, modeled as 2.0b). |
| HDMI 2.0b (Type A – Standard) | 1 | HDMI OUT 2 (Audio Only) | Audio-only output for legacy AV receivers. |
| Optical TOSLINK (S/PDIF) | 1 | Digital Audio Out (Optical) | TOSLINK digital audio output. |
| RJ-45 (100BASE-TX Fast Ethernet) | 1 | LAN (Ethernet) | Wired 10/100 networking. |
| USB Type-A (USB 2.0) | 1 | USB (front) | Front USB 2.0 port for media file playback. |
| IEC C8 (Figure-8 Inlet) | 1 | AC Power Inlet | Figure-8 mains inlet. |
Notes & Compatibility
HDMI OUT 1 is HDMI 2.0a (4K HDR / Dolby Vision / HDCP 2.2) and modeled here as HDMI 2.0b (closest approved tier); HDMI OUT 2 is audio-only. Ethernet is 10/100 (Fast Ethernet), not gigabit. USB is a front-panel USB 2.0 port for media playback. Powers from a figure-8 (IEC C8) mains inlet.
