Two monitors used to come with a catch. A dock that lives on your desk forever, a driver you have to install before anything works, or a handful of adapters that never quite behave the same way twice.
The ExtendView™ USB4 Dual HDMI Multiport Adapter skips all of that. It's a dual HDMI adapter that runs two 4K displays at 60Hz from a single USB4 cable, with no drivers and no DisplayLink. Then it tucks its own cable away and goes wherever you go.
The short version: two 4K/60Hz HDMI displays on supported Macs and Windows laptops · up to 125W laptop charging · four 10Gbps data ports · a 40Gbps USB4 host cable · a built in cable slot · $119.99
Using a MacBook Air or MacBook Pro with a base M1 or M2 chip? Those Macs support one external display. See which Macs run two screens.
Two 4K Screens, Zero Drivers: A True Dual HDMI Adapter
This is the part that matters most. Plug ExtendView™ into a USB4 or Thunderbolt port and both HDMI ports come alive, each running up to 4K at 60Hz. There's no software to download and no DisplayLink layer sitting between your laptop and your screens.
What two screens get you:
• Room to spread out · a timeline on one screen, your inbox or reference files on the other
• Smooth 4K at 60Hz · on both HDMI ports, so scrolling, playback and cursor movement stay fluid
• Nothing to install · plug in and your displays show up, on Mac and Windows
• A cleaner desk · one cable from your laptop runs both monitors
If you've ever installed an operating system update only to find your second screen stopped working until DisplayLink or a driver caught up, that third point is the whole story. We'll explain why below.
Seven Ports, One Cable: Every Port, Mapped
ExtendView™ fits seven ports into a body just 5.5 inches long, and every one of them has a job. The labels are printed right on the housing, so you're never guessing which port does what.
The port map:
• 2× HDMI · up to 4K/60Hz each, for your two external displays
• USB-C PD port · accepts up to 140W from your charger and charges your laptop at up to 125W (power only, no video output or data transfer)
• 2× USB-A 3.2 Gen 2 · up to 10Gbps for drives, keyboards, mice and the accessories you already own
• 2× USB-C 3.2 Gen 2 · up to 10Gbps for newer drives and devices (data only, no video output)
• USB4 host cable · up to 40Gbps upstream to your laptop
• LED indicator · lights up to show ExtendView™ is powered on
That's the difference between a real USB4 hub and a stack of single purpose dongles. Your laptop gives up one port, and everything else plugs into ExtendView™.
Charge Your Laptop While It Runs Both Displays
Plug your charger into ExtendView™'s USB-C PD port and your laptop charges at up to 125W. The port accepts up to 140W from your charger and passes up to 125W through to your laptop, so your MacBook Pro keeps charging while it drives two 4K screens and whatever's plugged into the data ports.
That's one less cable reaching across your desk and one less port spoken for on your laptop. Leave the charger connected to ExtendView™, and every time you plug in, power comes along with everything else.
Charging speed depends on your laptop, charger and cable. For the highest wattage, all three need to support 140W, such as a USB-C PD 3.1 EPR charger with an EPR rated cable. Not every laptop, charger or cable will reach it.
Fast Files With 10Gbps Ports and a 40Gbps USB4 Link
Two monitors are only half of a real workstation. The other half is moving files, and ExtendView™ is built for that too.
Four data ports, two USB-A and two USB-C, each run at up to 10Gbps. Footage, assets and backups transfer in seconds, whether you're offloading a shoot, pulling a project off an external SSD or archiving last quarter's work.
Behind them, the USB4 host cable connects everything to your laptop at up to 40Gbps. It's the same link that carries your displays and your charging.
Why USB4 Works Without DisplayLink
Many USB-C to dual HDMI adapters use DisplayLink to add a second screen. DisplayLink compresses your video into a data stream, then software on your computer and a chip in the adapter rebuild it for each monitor. It works, but that software has to be installed, kept running and updated, and an operating system update can break it until a new version arrives.
USB4 works differently. It carries native DisplayPort video from your laptop's own graphics to each HDMI port, with no software layer in between. Your Mac or PC sees both monitors as if they were plugged in directly, which is why the setup keeps working through OS updates.
In short: DisplayLink turns video into data that software has to decode. USB4 carries the video signal itself.
How to Set Up Two Monitors With ExtendView™
Getting started takes a few simple steps, no downloads required:
1. Plug into your laptop · connect the USB4 host cable to a USB4 or Thunderbolt port
2. Add power · plug your USB-C charger into the USB-C PD port marked with the lightning icon
3. Connect your displays · run an HDMI cable from each monitor to ExtendView™'s two HDMI ports
4. Set your resolution and refresh rate · choose up to 4K at 60Hz for each display in System Settings, then Displays on a Mac, or Display settings on Windows
5. Arrange your screens · drag the displays into place in the same settings window so your cursor moves naturally between them
That's it. Leave your monitors and charger connected to ExtendView™, and from then on it's one plug every time you sit down. Your whole desk comes back exactly the way you left it, both screens and all.
Designed to Belong: Space Black Aluminum and a Built In Cable Slot
ExtendView™ is housed in precision aluminum, anodized in Space Black to match your MacBook Pro and sit naturally on a premium desk setup. A dotted texture runs across the top, a small design detail that makes it look as considered as the rest of your desk.
The detail you'll appreciate most is the built in cable slot. The braided USB4 host cable tucks right into the body, so the connector stays protected in your bag and tidy on your desk. No dangling cable, and no bent connector at the bottom of your backpack.
At 5.5 x 2.4 x 0.8 inches (141 x 60 x 20 mm), ExtendView™ keeps a low profile next to your laptop and slips easily into a sleeve or bag.
Works With Your MacBook Pro, MacBook Air and Windows Laptop
ExtendView™ runs dual extended displays on every Mac with a Pro, Max or Ultra chip going back to M1, on M4, M5 and M6 Macs, and on Windows laptops with USB4 or Thunderbolt ports. It's one of the simplest ways to get a MacBook Pro dual monitor setup up and running.
Good to know:
• Pro, Max and Ultra chips (M1 and newer) · two extended displays, plug and play
• M4, M5 and M6 Macs · two extended displays, plug and play
• Base M3 models · two displays with your laptop closed (clamshell mode)
• Base M1 and M2 Macs · one extended display
• USB4 and Thunderbolt Windows laptops · two extended displays, plug and play
• iPad and Chromebook · work as a multiport adapter and support one display at a time
Not sure which chip is in your Mac? Open the Apple menu and choose About This Mac. It's listed right at the top.
Where ExtendView™ Fits Your Day
At home: ExtendView™ sits beside your laptop with both monitors and your charger plugged in. Sit down, plug in once, and your whole desk comes to life: two 4K screens, your drives and your power.
At the office: Hot desking with a pair of spare monitors? Pack ExtendView™ with the cable tucked in, plug in at whichever desk you land, and you're running two screens before your coffee cools.
On a shoot or on the road: Offload footage at 10Gbps, preview your work on a client's monitor or a hotel TV over HDMI, and keep your laptop charging the whole time.
ExtendView™ FAQ
Does ExtendView™ work with a MacBook Air M2?
Yes. On a MacBook Air with a base M2 chip (or a base M1), ExtendView™ works as a full multiport adapter and runs one external display. To run two screens, you'll need a Mac with an M4, M5 or M6 chip, any Pro, Max or Ultra chip, or a base M3 MacBook in clamshell mode.
Do I need DisplayLink or any drivers?
No. ExtendView™ uses USB4's native display output, so there's nothing to download or install on Mac or Windows.
Can both screens run 4K at 60Hz at the same time?
Yes. On a supported Mac or Windows laptop, each HDMI port runs up to 4K at 60Hz, and both run at once.
Does ExtendView™ work with a Mac mini?
Yes. Plug it into one of the Mac mini's USB4 or Thunderbolt ports. Mac mini models with an M4 or newer chip, or any Pro chip, run two displays through ExtendView™. Models with a base M1 or M2 chip run one.
Will it charge my laptop?
Yes. The USB-C PD port charges your laptop at up to 125W, depending on your laptop, charger and cable.
Not sure what your Mac supports? [Link: Mac dual monitor checker, if live at publish]
Complete Your Dual Monitor Setup
Two displays need two good cables, and a full desk needs reliable power. These pair nicely with ExtendView™:
• 8K Ultra High Speed HDMI® Cable · a braided 2m cable for each of your displays · $29.99
• ChargeView™ 140W Desktop Charger · four USB-C ports and a live power display for the rest of your devices · $99.99
Get the ExtendView™ Dual HDMI Adapter
ExtendView™ USB4 Dual HDMI Multiport Adapter · Space Black · $119.99
Available now at satechi.com.
If your desk has room for two screens, ExtendView™ is the dual HDMI adapter that makes it simple: one USB4 cable, two 4K displays, your charger and your drives, all in one place. Plug in, spread out and enjoy the extra room.
