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Black rectangular box with three HDMI ports on front, one on back, matte finish

STARTECH

STARTECH VS321HDBTK 3-port HDMI KVM switch 4096x2160

SKU CH-3J3H-KZQ8S MPN VS321HDBTK

A 3-port HDMI KVM switch extends 4K 30Hz up to 115ft or 1080p up to 230ft over CAT6 with a receiver unit included

  • Computer portsLocal Unit Connectors: 3 - HDMI (19 pin) Remote Unit Connect
  • Supported video resolution4096 × 2160
  • Temperature rangeOperating Temperature: 0 °C to 50 °C (32 °F to 122 °F) Stora
  • Humidity range0% to 90% RH
  • Product typeHDMI
  • Key featuresHDMI EXTENDER WITH SWITCH: This 3 Port HDMI Switch Box exten
  • Switch three HDMI sources at 4K 30Hz with built-in extender
  • Extend 4K up to 35m or 1080p up to 70m over CAT6 cabling
  • HDBaseT certified for reliable commercial AV installations
  • Control via push button, IR remote or serial commands
  • Includes receiver unit for complete point-to-point setup

Three-source HDMI KVM with extender

The StarTech VS321HDBTK combines a three-input HDMI switch with a CAT6 extender in one kit. It lets operators select among three local HDMI sources and view the chosen signal on a single remote display up to 35 metres away. The unit is aimed at digital-signage installers, conference-room integrators and control-room builders who need centralized switching over structured cabling.

Passive thermal design for 0 °C to 50 °C

No fans are fitted; the metal enclosure dissipates heat within the rated operating range of 0 °C to 50 °C (32 °F to 122 °F). Power draw is low enough that the supplied adapter runs silently, making the switch suitable for quiet environments such as studios or boardrooms. Storage tolerance stretches from -20 °C to 60 °C (-4 °F to 140 °F) at up to 90 % relative humidity.

4096 × 2160 at 30 Hz over CAT6

The extender transports 4K 30 Hz (4096 × 2160) signals up to 115 ft (35 m) on CAT6 or CAT5e cable, dropping to 1080p for runs up to 230 ft (70 m). HDCP 1.4 and 4:4:4 chroma subsampling are supported, but higher refresh rates or 60 Hz 4K are not available. Buyers needing 4K 60 Hz or longer unrepeated distances must choose a different extender class.

How it compares

Measured against everything we stock in KVM Switches & Rack Consoles, at today’s prices. Recalculated every night.

Price $182.99
Pricier than about 76% of the 4,010 comparable items (median $105.49).

Specifications

Product
Brand nameStarTech.com
Model nameVS321HDBTK
Product typeHDMI
Display
Supported video resolution4096 × 2160
Ports & slots
Computer portsLocal Unit Connectors: 3 - HDMI (19 pin)
Remote Unit Connectors: 1 - HDMI (19 pin)
Size & build
Product dimensions6.3 in × 4.1 in × 1.3 in
Product weight1.3 lb (0.59 kg)
Shipping weight1.50 kg
Package size297 × 208 × 66 mm
Environment & compliance
Temperature rangeOperating Temperature: 0 °C to 50 °C (32 °F to 122 °F)
Storage Temperature: -20 °C to 60 °C (-4 °F to 140 °F)
Humidity range0% to 90% RH

Questions about this item

How do I connect the three HDMI sources to the local unit and what step is often missed?

Connect each source to one of the three 19-pin HDMI inputs on the local unit, run a single CAT6 or CAT5e cable to the remote unit, then plug the remote unit's 19-pin HDMI output into the display; the step often missed is powering both units before selecting a source.

Which consumable item will need replacement first during long-term use?

The IR remote control requires two AAA batteries that are not included; they will need replacement when the remote range or responsiveness decreases.

What distance limit appears first when extending a 4K 30 Hz signal over CAT6?

The 4K 30 Hz extension is specified up to 115 ft (35 m) over CAT6; beyond that distance the 4K signal may become unstable while 1080p can still reach 230 ft (70 m).

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