If you're connecting a 4K source to a monitor or projector, the missing piece is often the HDMI gear between them. You can either mirror one source to several screens with the onn. 4-Port High Speed 4K HDMI Splitter, or run a single 4K signal across a longer distance with the Monoprice 4K High Speed HDMI Cable 15m. The right choice depends on whether your setup needs to reach multiple displays or just cover more distance to one display.
Quick verdict
The onn. splitter at $19.50 is the pick when you need to send one HDMI signal to a bank of monitors or a projector and a TV at once. The Monoprice cable at $85.54 is the pick when distance is the problem, because it carries 4K over fiber optic without external power over a 15-meter run.
Listed price and key strengths at a glance
| Product | Listed price | Price bar | Key strengths |
|---|---|---|---|
| onn. 4-Port High Speed 4K HDMI Splitter | $19.50 | Splits one HDMI source to four outputs; high-speed 4K; compact circular design | |
| Monoprice 4K High Speed HDMI Cable 15m | $85.54 | Fiber optic 4K@60Hz HDR; 18Gbps; slim 15m cable with no external power needed |
Where the onn. splitter wins
If your goal is duplication, the onn. splitter is the direct answer. It takes one HDMI source and sends it to up to four HDTVs, monitors, or projectors at once, making it useful for conference rooms, retail displays, or multi-screen setups where every screen shows the same image. The listing describes it as high-speed 4K, and the circular form factor makes it easy to tuck behind a display or on a shelf. Because it's a 1-to-4 splitter, you can feed four displays from a single HDMI output on your source device.
Where the Monoprice cable wins
The Monoprice 15m cable solves a different problem: getting a 4K signal to a monitor or projector that sits far from the source. It's a fiber optic cable rated for 4K@60Hz HDR at 18Gbps, and because it uses optical fiber instead of copper, it can keep the cable slim over 15 meters while carrying the signal without an external power supply. If your projector is mounted across the room or your monitor sits at the far end of a long desk, this cable handles the distance in one continuous run.
Product notes
onn. 4-Port High Speed 4K HDMI Splitter
This splitter gives you a 1-to-4 HDMI duplication setup, so one cable goes in and four HDMI cables go out to your displays. It's designed for HDTVs, monitors, and projectors, and the listing describes it as high-speed 4K, which fits the 4K splitting use case. The circular form factor is compact enough for a shelf or behind a mount. One limitation: it's a splitter, not a cable, so you'll still need HDMI cables between the splitter and each display. That means the total cost includes the extra cables, which is worth keeping in mind if you're starting from scratch.
Monoprice 4K High Speed HDMI Cable 15m
This is a 15-meter active optical cable in black, built to carry 4K video at 60Hz with HDR and 18Gbps bandwidth. The fiber optic construction is what allows the long, slim run without needing external power, which is a real advantage when your source and display are far apart. It's listed as compatible with PS4, PS3, UHD TVs, monitors, and projectors, so it should fit a home theater or workstation. One limitation: it only connects one source to one display, so it doesn't solve a multi-screen mirroring need. If you need to show the same content on multiple monitors, you'd still need a splitter.
Final choice by use case
- Need to send one 4K source to four monitors or projectors? Choose the onn. 4-Port High Speed 4K HDMI Splitter.
- Need to run a single 4K signal over a long distance to one display? Choose the Monoprice 4K High Speed HDMI Cable 15m.
