Fosmon HD1831 3-Port HDMI Switch with Pigtail Cable

March 13, 2017 - Comment

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(as of April 19, 2020 3:29 pm EDT - Details)

Ran out of HDMI ports on your HDTV/monitor/projector? Want to reduce the mess of cables connected to it? Fosmon’s 3×1 HDMI Intelligent Switch with Pigtail Support will take care of these problems. It has 3 HDMI input sources to provide plug-and-forget auto sensing capabilities that automatically switch inputs when a signal is detected. A button to manually switch between the 3 sources is also built-in.

Powered from Connected Devices
No power adapter is necessary to make this switch work, as long as the connected devices supply sufficient power. HDMI cables have the capability to deliver power from connected sources.

HDMI Supported Features
Up to 1080p, HDCP 1.0/1.1, 12-bit Deep Color, 3D, and uncompressed/compressed audio formats are some of the newer HDMI features supported on this switch.

Gold-Plated Connector
The 24K gold-plated connector on the 20in / 50cm cable resists corrosion and reduces tarnish.

Features and Specifications
•3 HDMI inputs / 1 HDMI output
•Supports 12-bit Deep color per channel; maximum of 36-bits across all channels
•Supports 3D devices
•Maximum Single Link Video Range: 1920x1080p
•Supports HDCP pass-through
•Supports 2.5Gbps/250MHz per channel, maximum bandwidth per display is 7.5Gbps
•Supports uncompressed audio such as LPCM
•Supports compressed audio such as DTS Digital, Dolby Digital, DTS-HS and Dolby TrueHD
•24k gold-plated connector

Plug-and-forget auto sensing only works correctly for devices that do not output continuous voltage over the HDMI port when turned off. Powering on a device gives it output priority over the other two devices. Output priority is given to the next device on the switch if the current output device is turned off. Make sure the connected devices supply enough power to the switch.

Devices that require HDCP 2.2 or higher may be incompatible (e.g. Roku 4).

Please use High-Speed HDMI cables that are ?50ft/15m. 28AWG recommended.

Product Features

  • Intelligent Function: Smart, automatic operation – has the key-press-switching function
  • Works well with Nintendo Switch, Blu-Ray, Cable Box, PS3, PS4, Xbox One S, Xbox 360, etc – Support 3D
  • Comes with one fixed 1’3/4 ft. HDMI cable (pigtail) – Plug and Play
  • HDTV resolutions up to 1080p, computer resolutions up to 1920×1200
  • HD Audio and HDCP Compliant


VA Chicago says:

This is right for you if you haven’t enough HDMI outlets on the back of your HD TV… This is the right product if you’re lacking HDMI outlets on your TV. Example: I have only two HDMI ports (outlets) on the back of my HD TV. One is taken up by the cable box. The other has been used for my Blu-Ray player. 2 – 2 = 0. So, when I wanted to attach a new (Amazon) Fire Stick, I thought, “What do I do now? Keep unplugging the Blu-Ray and plugging in the Fire Stick? And vice versa?” And I did for a while before deciding that plugging and unplugging over and over again every day…

Andy says:

Exceeded my expectations Received this product last week. I have to say I am very pleased with everything about this product. I bought this to use with my BenQ GL24060HM 24″ monitor, as it only has one HDMI port in the back of it. This has totally fixed that problem and has made this monitor’s functionality go through the roof. For the price, it has exceeded my expectations. Some of the other reviews have said that the auto switch function hasn’t been working properly for them, but I have yet to run into that issue…

Amazon Customer says:

So I got a hold of Amazon and very nicely and very fast sent me a new one I have gotten 2 of these, I got then first one and all it did after plugging it in was blink off & on. So I got a hold of Amazon and very nicely and very fast sent me a new one. I received the second one that does the exact same thing. Thinking that there is no way I have gotten 2 bad switches I contacted Fosmon who asked for the make and model #’s of my devices. After giving them this information I received another email from them stating that their: 

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