Will this work with dp to hdmi cables, and usb to hdmi adapter?

Yes, they works with this KVM switch. But note that it must be dp/usb to hdmi cable/adapter, not hdmi to dp/usb.

Can the 2nd monitor from the laptop come from a usb-c port with a converter to hdmi? thanks!

Sure, it can works with usb-c port to to hdmi converter.

What is the maximum refresh rate when using 3440x1440 resolution? is it 144hz? or is it 60hz?

The KVM switch support 3440x1440 resolution up to 60Hz.

does this have ethernet port?

Sorry, this kvm switch doesn't have ethernet port.

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Description

🚀 Elevate your dual-monitor workflow—because two PCs are better than one!

ULTRA HIGH DEF VISUALS - Experience crystal-clear 4K UHD at 60Hz or ultra-smooth 1080P at 240Hz for work and play without compromise.
BLAZING FAST USB 3 0 HUB - Connect and share up to three USB peripherals with lightning-fast 5Gbps data transfer speeds.
INSTANT HOTKEY SWITCHING - Switch between PCs instantly with customizable hotkeys or front-button control—no lag, no hassle.
SEAMLESS DUAL PC CONTROL - Manage two computers with one keyboard, mouse, and dual monitors—boost your multitasking game effortlessly.
CROSS PLATFORM POWERHOUSE - Plug-and-play compatibility with Windows, macOS, and Linux ensures your setup stays flexible and future-proof.

The AV Access KVM Switch lets professionals and gamers control two computers with a single keyboard, mouse, and dual monitors, supporting stunning 4K@60Hz and ultra-fast 1080P@240Hz visuals. Featuring a built-in USB 3.0 hub with 5Gbps transfer speeds, hotkey switching, and broad OS compatibility, it’s designed for seamless multitasking and productivity in any modern workspace.

Specifications

Operation Mode	KVM Switch
Current Rating	3 Amps
Operating Voltage	12 Volts (DC)
Contact Type	Hdmi Type-a 19-pin
Connector Type	Hdmi
Brand	v AV Access
Terminal	Pc
Item dimensions L x W x H	5.61 x 0.91 x 1.03 inches
Circuit Type	2-way
Actuator Type	Push Button
Contact Material	Metal
International Protection Rating	IP54
Number of Positions	2
Control Method	Touch
Connectivity Protocol	HDMI 2.0, USB 3.0
Color	KVM Switch HDMI
Unit Count	1.0 Count
Number of Items	1
Manufacturer	AV ACCESS
UPC	795063902667
Item model number	4KSW21-DM
Item Weight	3.61 pounds
Product Dimensions	5.61 x 0.91 x 1.03 inches
Item Dimensions LxWxH	5.61 x 0.91 x 1.03 inches
ASIN	B0B72P2DBG
Date First Available	July 20, 2022

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