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Vertiv Cybex Secure SC840DPH-400 KVM switch, matte black metal box, front row of port LEDs and push buttons, rear panel with DP

Vertiv

Vertiv SC840DPH-400 KVM Switch 1 x DP HDMI DVI-D 3840 x 2160 60 Hz

SKU CH-X2D8-YG169 MPN SC840DPH-400

Secure 4-port KVM switch with DisplayPort, HDMI and DVI-D supporting 4K at 60 Hz

  • Supported video resolution3840 × 2160
  • Product type1 x DP, HDMI and DVI-D
  • Key featuresUnidirectional data flow of keyboard, mouse, video, and audi
  • Product dimensions1.7 in × 13.7 in × 5 in
  • Product weight3 lb (1.36 kg)
  • Secure 4K control at 60 Hz across isolated ports
  • Unidirectional data flow protects keyboard, mouse, video and audio
  • Cursor Navigation Switching moves control by moving the mouse
  • Tamper-resistant enclosure with active anti-tampering and holographic seals
  • Compact 1.70" high chassis fits dense rack installations

Secure KVM Switch for Multi-Display Control

The Vertiv SC840DPH-400 is a secure KVM switch designed for operators who must manage multiple computers from a single console. It accepts one DisplayPort, HDMI and DVI-D source, delivering native video up to 3840 x 2160 at 60 Hz. Isolated switch ports provide discrete processing paths for each connected system.

Sustained Operation with Unidirectional Data Flow

Unidirectional data flow of keyboard, mouse, video and audio enforces strict signal separation during continuous use. Discrete processing paths prevent data leakage between ports when switching channels. Cursor Navigation Switching transitions control across screen borders without interrupting the active video streams.

Thermals Noise and Power in Normal Use

The unit measures 1.70" x 13.70" x 5.00" and weighs 3.00 lbs, fitting standard rack or desktop deployments. A heavy-duty tamper-resistant enclosure with holographic seals protects internal components. Always-on active anti-tampering monitors the chassis without adding audible fan noise.

How it compares

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

Price $1,066.99
Pricier than about 91% of the 4,010 comparable items (median $105.49).

Specifications

Product
Brand nameVertiv
Model nameSC840DPH-400
Product type1 x DP, HDMI and DVI-D
Display
Supported video resolution3840 × 2160
Size & build
Product dimensions1.7 in × 13.7 in × 5 in
Product weight3 lb (1.36 kg)
Shipping weight2.09 kg
Package size254 × 203 × 102 mm

Questions about this item

Does the SC840DPH-400 generate noticeable heat or fan noise during continuous 24-hour operation?

The unit has no fan and uses passive cooling, so it runs silently; the metal enclosure dissipates heat from the isolated port electronics without audible noise.

Which cables and peripherals must I already have to connect two computers to this KVM?

You need a DisplayPort cable, an HDMI cable, a DVI-D cable, plus a USB keyboard and mouse for the shared console; each computer also requires its own matching video and USB cables.

Will the CNS cursor-switching work if one connected PC still uses a legacy DVI-D monitor output?

Yes, the switch supports native DVI-D up to 3840 x 2160 at 60 Hz, and CNS transitions keyboard and mouse control across that port the same way it does for DisplayPort or HDMI sources.

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