Which HDMI Port to Use on TV (HDMI 1 vs 2, ARC Explained)

Table of Contents

• The Quick Answer: Which HDMI Port for Each Device
• HDMI 1.4 vs 2.0 vs 2.1: What the Versions Mean
• What Is the ARC/eARC Port and When Do You Need It?
• TV Settings You Must Enable After Plugging In
• Common HDMI Port Mistakes to Avoid
• Frequently Asked Questions
• Related Guides

Plug your soundbar into the port labeled ARC or eARC, your PS5 or Xbox into an HDMI 2.1 port, and your Fire Stick or other streaming device into any remaining HDMI 2.0 port. The port numbers (HDMI 1, 2, 3) don't matter by themselves — what matters is the version and label printed next to each number.

If you've ever stared at the back of your TV wondering why there are three or four identical-looking HDMI ports with confusing labels, you're not alone. Using the wrong port won't break anything, but it can silently rob you of picture quality, block 120Hz gaming, or leave your soundbar mute. This guide shows you exactly which HDMI port to use for every device you own.

The Quick Answer: Which HDMI Port for Each Device

Match the port's capabilities to what your device can output. Here is the correct pairing for the most common setups:

• Soundbar or AV receiver → the port labeled ARC or eARC (often HDMI 1). This is the only port that sends audio from the TV back to your speakers.
• PS5, Xbox Series X, or gaming PC → an HDMI 2.1 port. This is the only way to unlock 4K at 120Hz, variable refresh rate (VRR), and auto low latency mode (ALLM).
• Fire Stick, Roku, Apple TV, Chromecast → any HDMI 2.0 port. These devices max out at 4K 60Hz with HDR, which HDMI 2.0 handles easily.
• Blu-ray / 4K Blu-ray player → HDMI 2.0 is enough for movies; use HDMI 2.1 only if the player supports advanced gaming-style features.
• Cable box, satellite receiver, older set-top box → any free port. These output 1080p or basic 4K, so even an older HDMI 1.4 port works fine.

The golden rule: give your most demanding device the best port first, then work down the list. Never waste an HDMI 2.1 port on a streaming stick, and never plug a PS5 into an old HDMI 1.4 port.

HDMI 1.4 vs 2.0 vs 2.1: What the Versions Mean

All HDMI ports look physically identical, but the version determines how much data the port can carry — its bandwidth. More bandwidth means higher resolution, higher refresh rates, and HDR.

• HDMI 1.4 (10.2 Gbps): handles 1080p easily and 4K at only 30Hz with no HDR. Fine for old cable boxes, but avoid it for any modern 4K device — it can silently strip HDR from your picture.
• HDMI 2.0 (18 Gbps): handles 4K at 60Hz with HDR. This covers all streaming, Blu-ray movies, and broadcast TV. For most households, HDMI 2.0 ports do the heavy lifting.
• HDMI 2.1 (48 Gbps): handles 4K at 120Hz and even 8K at 60Hz, plus gaming features like VRR and ALLM. Reserve these for next-gen consoles and gaming PCs.

Important: both the TV port and the source device must support the version. A PS5 plugged into an HDMI 2.0 port will still work, but you'll be capped at 4K 60Hz — the 120Hz modes simply won't appear. Also note that many TVs put their full-bandwidth ports on the rear panel, while side or front ports are sometimes limited to HDMI 1.4. For your main devices, always use the rear ports.

What Is the ARC/eARC Port and When Do You Need It?

ARC stands for Audio Return Channel. A normal HDMI port only carries audio and video into the TV from a source device. The ARC port does something extra: it also sends audio back out of the TV to your soundbar or receiver over the same cable. That means the sound from your TV's built-in Netflix or YouTube apps travels to the soundbar with no second cable needed.

On most TVs, only one port carries this label — commonly HDMI 1, marked "ARC" or "eARC". eARC (enhanced ARC) is the newer version with much higher bandwidth, supporting lossless surround formats like Dolby TrueHD Atmos and DTS:X. If both your TV and soundbar support eARC, always use it.

Key point: the ARC port is only for audio equipment. Plugging a Fire Stick or console into the ARC port works for video, but then your soundbar has nowhere to go — and you lose the audio-return function entirely. Keep the ARC port reserved for the soundbar, always.

TV Settings You Must Enable After Plugging In

Plugging into the right port is only half the job. Many TVs ship with their best HDMI features disabled by default, so even a correct connection can underperform until you flip a setting:

• Enable enhanced HDMI mode on the port you're using. Samsung calls it Input Signal Plus (Settings → General → External Device Manager), LG calls it HDMI Deep Color (Settings → General → Devices), and Sony calls it Enhanced format (Settings → Channels & Inputs → External inputs). Without this, 4K HDR and 120Hz may not activate.
• Turn on HDMI-CEC if you want one remote to control everything. Samsung calls it Anynet+, LG calls it SimpLink, Sony calls it Bravia Sync. This lets your TV remote power the soundbar on and off and control its volume.
• Check your cable. For HDMI 2.1 features (4K 120Hz, eARC), use a certified Ultra High Speed cable (48Gbps). An old cable can cause flickering, dropouts, or missing HDR even on the right port.
• Set the correct input. After connecting, switch the TV to the matching input (HDMI 1, HDMI 2, etc.) and confirm the device is detected at the expected resolution in the TV's info banner.

Common HDMI Port Mistakes to Avoid

These are the errors I see most often when helping people set up their TVs:

• PS5 in a side-panel HDMI 1.4 port: the console works, but 120Hz and VRR never appear. Move it to a rear HDMI 2.1 port.
• Soundbar in a non-ARC port: you'll get no sound from TV apps at all, or you'll need a separate optical cable. Move it to the ARC/eARC port.
• Streaming stick in the ARC port: wastes the TV's only audio-return port. Move the stick to a plain HDMI 2.0 port.
• Old cable on a new setup: a 10-year-old HDMI cable can silently block HDR and 4K 60Hz. When in doubt, replace it with a certified Ultra High Speed cable — they're inexpensive.
• Skipping the settings menu: the most common "my 4K doesn't look 4K" cause. Enable the enhanced HDMI mode for the port in use.

Frequently Asked Questions

Does it matter which HDMI port I use for my Fire Stick?

Mostly no. A Fire Stick maxes out at 4K 60Hz with HDR, which any HDMI 2.0 port handles. Just avoid the ARC/eARC port (reserve it for the soundbar) and avoid old HDMI 1.4 ports if your TV has them, since those can strip HDR.

Can I plug my soundbar into a regular HDMI port?

It will carry video-device audio only in special cases — in practice, no. A soundbar must go into the ARC/eARC port to receive audio from the TV. On a regular port you would need a separate optical cable, and you'd lose one-remote volume control.

Why is only one of my HDMI ports labeled ARC?

Because only one port has the extra audio-return circuitry. TV makers designate a single port (usually HDMI 1) for this job. The rest are standard input-only ports.

Do I need a special HDMI cable for HDMI 2.1?

Yes, for full HDMI 2.1 features. You need a certified Ultra High Speed HDMI cable rated at 48Gbps. Older High Speed cables may work for 4K 60Hz but can fail at 4K 120Hz or cause intermittent black screens.

What happens if I plug a PS5 into an HDMI 2.0 port?

It works fine at 4K 60Hz with HDR, but the 120Hz performance modes, VRR, and ALLM won't be available. For the full next-gen experience, use an HDMI 2.1 port with enhanced mode enabled.

Related Guides

• HDMI ARC Not Working? Fix Guide
• How to Connect a Soundbar to TV (HDMI ARC, Optical, Bluetooth)
• Best TV Settings for PS5 and Xbox Series X
• How to Enable 4K 120Hz on TV for PS5/Xbox
• TV Has No Sound? Fix for All Brands

About the Author — IW Official

A hands-on TV repair technician with years of experience fixing LED, LCD and Smart TVs. Runs a YouTube channel sharing practical, step-by-step TV repair videos, and writes in-depth troubleshooting guides so you can fix it yourself.