J-Tech Digital

J-Tech Digital JTECH-DKM21-8K

Expert rating6.2 / 10

Computers:: 2
Video Standard:: DisplayPort 1.4
Max Resolution:: 8K@60Hz / 4K@240Hz
USB Hub Ports:: 4 (3x USB-A + 1x USB-C, 5Gbps)

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Manufacturer: J-Tech Digital Last updated: 2026-09-15

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J-Tech Digital JTECH-DKM21-8K Review

J-Tech Digital JTECH-DKM21-8K 2x1 DisplayPort 1.4 KVM switch lets two computers share one monitor, keyboard and mouse with 8K@60Hz / 4K@240Hz output and a 4-port USB 3.0 (5Gbps) hub with 3 USB-A and 1 USB-C ports.

If you run two PCs off a single high-refresh or high-resolution monitor, the DKM21-8K is a straightforward way to stop swapping cables. It passes DisplayPort 1.4 through cleanly enough for 4K at 240Hz or full 8K at 60Hz, and the USB 3.0 hub (with a USB-C port included) switches your keyboard, mouse, and any other USB peripherals along with the display. Switching is done from the front panel or the included wired remote, so there's no software to install.

Overview

The JTECH-DKM21-8K is a 2-computer, 1-monitor DisplayPort 1.4 KVM switch built for desks running two machines against a single high-end display. It carries full 8K@60Hz / 4K@240Hz bandwidth and bundles a 4-port USB 3.0 hub (3x USB-A, 1x USB-C) so keyboard, mouse, and other peripherals switch along with the video signal.

Switching

Source selection is handled from a front-panel button or the included wired remote control, letting you flip between the two connected computers without reaching behind the desk.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating6.2 / 10

An 8K DisplayPort 2-PC KVM from a smaller pro-AV integrator brand; specs are strong but independent review coverage is thinner than mainstream brands.

Best for

Dual-PC desks sharing one high-refresh or high-resolution monitor
Users who want DisplayPort 1.4 bandwidth for 4K@240Hz or 8K@60Hz
Setups needing a USB-C peripheral port alongside USB-A

Not for

Setups with more than 2 source computers
HDMI-only computers or monitors (DisplayPort only)
Multi-monitor KVM setups (single monitor output only)

Specifications

What these specs mean

Capability Score

6.1/10

How much this switch can do compared with other desk KVM switches, rated from its specifications.

Identity

Switching Method	Button, Wired Remote

Topology

Computers Supported	2 computers
Displays Per Computer	1 displays
KVM Segment	Desk

Video & Features

Video Standard	DisplayPort
Max Resolution	8K
USB Hub Ports	4

Video interface

Video Interface Version	DisplayPort 1.4

Per display capability

Max Resolution Single Display	7680x4320
Max Refresh At Max Resolution	240 (at 4K; 60Hz at 8K)

Display continuity

HDR Passthrough	Yes

USB peripheral switching

USB Switching Speed	USB 3.0 5Gbps

In the box and price

Price	69.99 USD
Included Cables	DisplayPort cable, USB cable

FAQs

What are the key specifications of the J-Tech Digital JTECH-DKM21-8K (DisplayPort / 2 Computers / 8K@60Hz / 4 USB 3.0 Ports)?

Key specs for the J-Tech Digital JTECH-DKM21-8K: USB Hub Ports 4 (3x USB-A + 1x USB-C), Max Resolution 8K, Max Resolution Per Display 7680x4320, USB Version USB 3.0 (5Gbps), Video Standard DisplayPort, Video Version DisplayPort 1.4.

Who is the J-Tech Digital JTECH-DKM21-8K (DisplayPort / 2 Computers / 8K@60Hz / 4 USB 3.0 Ports) best suited to?

Best suited to: Dual-PC desks sharing one high-refresh or high-resolution monitor; Users who want DisplayPort 1.4 bandwidth for 4K@240Hz or 8K@60Hz; Setups needing a USB-C peripheral port alongside USB-A.

What are the drawbacks of the J-Tech Digital JTECH-DKM21-8K (DisplayPort / 2 Computers / 8K@60Hz / 4 USB 3.0 Ports)?

Not the best fit for: Setups with more than 2 source computers; HDMI-only computers or monitors (DisplayPort only); Multi-monitor KVM setups (single monitor output only).