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TRENDnet 4-Port USB KVM Switch Kit with Audio, TK-409K, Control Up to 4 Computers, Windows, Linux, Mac OS Compliant, 2048 x 1536 VGA Resolution, NDAA & TAA Compliant, KVM Cables Included, Black
TRENDnet

TRENDnet 4-Port USB KVM Switch Kit with Audio

Bottom line: The TRENDnet 4-Port USB KVM Switch Kit with Audio ($64.99 on Amazon as of 2026-10-07): Four full KVM cable sets included: two 4 ft, two 6 ft; main trade-off: VGA only, capped at 2048 x 1536 @ 60Hz, no HDMI or DisplayPort.

$64.99

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Buy on Amazon — $64.99 Compare to similar kvm switches

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Four full KVM cable sets included: two 4 ft, two 6 ft
  • ✓ USB-powered at 0.7W max, so no wall adapter or extra outlet
  • ✓ Separate 3.5mm speaker and mic jacks route audio per port
  • ✓ Three switching methods: front buttons, hot keys, 10-60s Auto-Scan
  • ✓ NDAA and TAA compliant for US/Canada government procurement

Cons

  • ✗ VGA only, capped at 2048 x 1536 @ 60Hz, no HDMI or DisplayPort
  • ✗ Two USB ports on the console side limit you to keyboard and mouse
  • ✗ Analog VGA over 6 ft cable can soften text on high-res displays
  • ✗ Bus-powered design means an unpowered port can drop the switch

Manufacturer description

The TRENDnet TK-409K 4-Port USB KVM Switch Kit gives you one keyboard, mouse, and VGA monitor to drive up to four computers, with full audio routing built in. Each port carries a VGA HDB 15-pin connection at resolutions up to 2048 x 1536 @ 60Hz, plus separate 3.5mm speaker and microphone jacks, so you can listen to music or stay on a mic from one machine while you work on another. Switching happens three ways: front-panel push buttons, keyboard hot keys, or Auto-Scan with a 10 to 60 second interval for hands-free monitoring. The kit ships with four complete sets of KVM cables (two at 4 ft…

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SpecPicks Verdict

SpecPicks scored TRENDnet 4-Port USB KVM Switch Kit with Audio using a rating × review-volume × price-fit model applied to published specs and reviews across the kvm switches category. TRENDnet's kvm switches lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for kvm switches of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How many computers can the TRENDnet TK-409K control?

Up to four. Each computer connects through one USB 2.0 Type A port, one VGA HDB 15-pin connection, and 3.5mm speaker and microphone jacks.

Do I need to buy KVM cables separately?

No. Four separate KVM cable sets ship with the switch: two sets at 1.2m (4 ft) and two sets at 1.8m (6 ft), so all four workstations can be wired immediately.

Does it need a power adapter?

No. The included KVM cables supply USB power to the switch, with a maximum consumption of 0.7W, so no power adapter or spare outlet is required.

What is the maximum resolution it supports?

The TK-409K supports VGA/SVGA resolutions up to 2048 x 1536 at 60Hz. It is a VGA-only switch, so there are no HDMI or DisplayPort inputs.

Does it work with Mac and Linux, and are drivers required?

It is Windows, Linux, and Mac OS compliant with no driver installation needed. It is also NDAA and TAA compliant for U.S. and Canada.

Key Features

  • DEVICE INTERFACE: 1 x VGA /SVGA HDB 15-pin (Female); 2 x USB ports (Keyboard / Mouse); 1 x 3.5mm speaker jack; 1 x 3.5mm microphone jack
  • NDAA COMPLIANT: With our NDAA compliant KVM Switch, you can plan and install networking solutions that Government customers demand today (U.S. and Canada Only)
  • COMPUTER INTERFACE: (Up to 4) 1 x USB 2.0 Type A; 1 x VGA /SVGA HDB 15-pin (Female); 1 x 3.5mm speaker jack; 1 x 3.5mm microphone jack
  • CONTROL UP TO 4 COMPUTERS: The 4-Port USB KVM Switch allows you to control up to four computers with one set of console controls
  • KVM CABLES INCLUDED: Separate sets (4) of KVM cables are included with the KVM Switch, so users can start controlling four workstations instantly. 2 sets: 1.2m (4 ft.) and 2 sets: 1.8m (6 ft.)
  • USB POWER: The KVM cables also provide USB power to the 4 Port KVM Switch with a max consumption of 0.7W, eliminating the need for a power adapter

Full Specifications

BrandTRENDnet
ColorBlack
ModelTK-409K
Wattage10 watts
MaterialPlastic
TerminalThrough Hole
USB POWERThe KVM cables also provide USB power to the 4 Port KVM Switch with a max consumption of 0.7W, eliminating the need for a power adapter
MULTI TASKListen to music or share a microphone from one computer while working on another
Unit Count1.0 Count
Part NumberTK-409K
Switch TypePush Button
Circuit Type4-way
ConnectivityUSB
Contact TypeElectronic_switch
Control Typefull
AUDIO SUPPORTExperience full audio support through the 3.5mm microphone and speaker jacks
Actuator TypePush Button
CompatibilitySwitch, Mac, Linux
Material TypePlastic
Mounting TypePanel Mount
Full listing titleTRENDnet 4-Port USB KVM Switch Kit with Audio, TK-409K, Control Up to 4 Computers, Windows, Linux, Mac OS Compliant, 2048 x 1536 VGA Resolution, NDAA & TAA Compliant, KVM Cables Included, Black

Ready to buy?

TRENDnet 4-Port USB KVM Switch Kit with Audio, TK-409K, Control Up to 4 Computers, Windows, Linux, Mac OS Compliant, 2048 x 1536 VGA Resolution, NDAA & TAA Compliant, KVM Cables Included, Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $64.99

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

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TRENDnet 4-Port USB KVM Switch Kit with Audio, TK-409K, Control Up to 4 Computers, Windows, Linux, Mac OS Compliant, 2048 x 1536 VGA Resolution, NDAA & TAA Compliant, KVM Cables Included, Black
$64.99
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