does this allow me to have two monitors side by side as an extension or just copy the same image?

This will only allow you to mirror your monitor (just a copy of the same image). If that is what you want to do, here's a tip: I am using a pc running windows xp and I wanted to mirror the image to a tv. Using this product I have to have only the monitor plugged into this device when I start up my computer. Once the computer starts up, then I can plug the tv into the other plug on this device. Otherwise when the computer is starting up and trying to sense the monitor, it will sense both the monitor and the tv and get confused and then nothing will show up on either device. Hope this was helpful.

Can i connect a pc(dvi) and my ps4(hdmi) to connect to my monitor (dvi) by having this switch on the input of the monitor instead of the opposite way.

To my knowledge, no you cannot. There is no way to toggle it between the two. It is designed for the dvi to be split outward, not inward.

Does this work in reverse? Can I connect 2 DVI sources to a single DVI monitor?

Tried that, won't work. SITUATION: 2 separate DVI-D monitors, 2 separate computers with dual DVI-D outputs. Bought two splitters (StarTech), attached male end to each monitor (Asus 23.5 1920x1080 res.) Hooked up DVI-D cables to each splitter so that I could turn on one computer at a time and use both monitors WITHOUT HAVING TO MANUALLY SWITCH DVI-D CABLES EVERY TIME. RESULT: Bleed thru from one computer that was NOT powered up caused one or both monitors to switch on/off, the computer that was off even had the video card illuminated with partial power, (NOT a good thing as it may damage cards)!!!!BTW: I took apart one StarTech splitter in hopes of disabling/cutting one of the female connectors...WOW it is well made, perfectly shielded and manufactured!! So this splitter will ONLY mirror the output for two separate monitors for one source, like having a large TV Mirroring whats on your computer monitor. Cheers, MickeyMedic.

Will this product work with 720p, 1080i, or 1080p signals?

Did not work for my client - cloned the same screen on both monitors

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🔌 Double your display power, not your hassle!

OPTIMIZED FOR FULL HD - Enjoy crisp visuals up to 1920x1200 resolution without signal degradation—ideal for professional setups.
PLUG AND PLAY SIMPLICITY - No drivers or software needed—just connect and amplify your workspace instantly.
BUILT IN STRAIN RELIEF CABLE - 12-inch integrated cable protects your graphics card port from wear and tear, ensuring longevity.
LIFETIME SUPPORT RELIABILITY - Backed by StarTech.com's lifetime warranty and expert 24/5 multilingual tech assistance for peace of mind.
EFFORTLESS DUAL DISPLAY MIRRORING - Duplicate your DVI-D signal flawlessly on two screens—perfect for presentations and multitasking.

The StarTech.com 1ft DVI Splitter Cable (DVISPL1DD) is a professional-grade passive adapter that duplicates a single DVI-D digital video output to two identical DVI-D displays. Designed for resolutions up to 1920x1200, it features a built-in 12-inch cable to reduce connector strain and is backed by a lifetime warranty with 24/5 technical support. Ideal for IT professionals needing reliable mirrored displays without complex setups.

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Brand	StarTech
Product Dimensions	30.48 x 4.32 x 3.81 cm; 153 g
Item model number	DVISPL1DD
Manufacturer	StarTech.com
Series	DVISPL1DD
Color	Black
Processor Count	1
Computer Memory Type	DDR3L-1600 SDRAM
Are Batteries Included	No
Item Weight	153 g

StarTech.com 1ft DVI Splitter Cable - M/F - DVI-D to 2x DVI-D Dual Video Splitter for Your Split Screen Computer Monitor (DVISPL1DD), Black

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