# REAL CABLE HD31SM

**Brand:** REALCABLE
**Category:** TV & vidéo
**Code (GTIN/SKU):** 3700195870835
**Canonical URL:** https://openreviews.io/en/reviews/realcable/real-cable-hd31sm-3700195870835

## Rating: 4.3/5 ★★★★☆ — 4 reviews analyzed
_Confidence: high_

## At a glance

REAL CABLE HD31SM (REALCABLE) reviews: 4.3/5 based on 4 analyzed reviews, updated October 15, 2026.

Praised: automatic switching and signal quality.

4 reviews analyzed, all published on other sites.
Other sites: 1 source, 4 reviews, average rating 4.3/5.
How we count reviews: https://openreviews.io/en/methodology

## AI summary

This HDMI switch allows you to connect multiple devices to a single screen while simplifying source management. Users highlight its daily efficiency, particularly thanks to its automatic detection that switches smoothly from one device to another. Furthermore, video and audio transmission is carried out without any observed signal loss.

## Strengths

- **Automatic switching** — Switching between the different connected HDMI sources is smooth and automatic.
- **Signal quality** — Image and sound transmission is carried out without any loss of quality or signal.

## Frequently asked questions

- Is the automatic switching fast?
- Is there any loss of image quality?
- Does the box require an external power supply?
- Is it compatible with 4K signals?

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_Source: OpenReviews — https://openreviews.io/en/reviews/realcable/real-cable-hd31sm-3700195870835_