In 2 screen mode what is the aspect ratio? The images provided show each side as full screen? Shouldn't they be letter boxed?

This device does not maintain aspect ratio. It stretches the image if needed to fill the layout. So for side-by-side the images are vertically stretched.

Does it take 4 1080p inputs and outputs a 4k of the combined 4 1080p inputs ?

It outputs a maximum of 1080p whether you are displaying 1 input or 4. The screen says its displaying each at 1080p but my monitor shows that it’s only receiving a combined 1080p signal. I’ll be sending mine back, as having four 960x540 screens looks absolutely horrible and most text cannot be read.

On a 4k @ 60hz tv, if my 4 inputs are 4 mac mini 2012 (hdmi 1.4 1920x1080), will I see the same 1920x1080 resolution for each mac with 4 screen mode?

Yes you will. What ever input you connect will show in that resolution in 4 screen mode.

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HD-401MR Quad Multi-Viewer 4x1 HDMI Switcher 4 Ports Seamless Switch and IR Remote Supports up to 1080p

Product ID: 267964425

Details

Brand
OREI
Cable type
HDMI
Colour
black
Compatible devices
Monitor
Connector type
HDMI

📺5 versatile multi-view modes

🔄4 HDMI inputs, seamless switching

🔊Supports advanced audio formats

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔀 Elevate your multi-source game with seamless switching and pro-grade clarity!

FLEXIBLE CONTROL OPTIONS - Switch inputs via front panel, IR remote, or RS-232 for seamless integration into any setup.
DYNAMIC MULTI VIEW DISPLAY - Customize your screen with 5 viewing modes—single, dual, or quad source layouts to maximize your workspace.
SEAMLESS 4 X 1 HDMI SWITCHING - Effortlessly toggle between 4 HD sources with zero lag for uninterrupted productivity.
IMMERSIVE AUDIO COMPATIBILITY - Supports LPCM, Dolby Atmos, DTS:X and more, delivering rich, professional-grade sound clarity.
CRYSTAL CLEAR 1080 P HD SUPPORT - Experience sharp visuals with full HD resolution compatibility, perfect for presentations and monitoring.

The OREI HD-401MR is a professional 4x1 HDMI switcher featuring fast, seamless switching between four HDMI inputs. It supports up to 1080p resolution and multiple audio formats including Dolby Atmos and DTS:X. With five multi-view modes and versatile control options (front panel, remote, RS-232), it’s designed for efficient multi-source management on a single HD display. Backed by lifetime tech support and a 12-month warranty, it’s ideal for managers and professionals seeking streamlined AV control.

Specifications

ASIN	B07H5TF6X2
Best Sellers Rank	#7,082 in Electronics ( See Top 100 in Electronics ) #18 in Audio & Video Selector Boxes
Brand	OREI
Cable Type	HDMI
Color	black
Compatible Devices	Monitor, Television
Connector Type Used on Cable	HDMI
Customer Reviews	4.4 4.4 out of 5 stars (439)
Global Trade Identification Number	00854339007731
Item Weight	680 g
Manufacturer	OREI
Mfr Part Number	HD-401MV
Model Number	HD-401MV
Number of Ports	4
UPC	854339007731
Unit Count	4.0 Count

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