Build Your Complete System
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
No Bots, Just Experts
Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
Black Box KV9204A KVM Switch for PS/2 or USB Servers with USB Console
Overview
The Black Box KV9204A is a KVM switch designed to consolidate keyboard, video, and mouse control across multiple servers — supporting both legacy PS/2-connected servers and modern USB-based servers from a single USB console. If your server room runs a mixed installed base of older PS/2 rack units alongside current USB-interfaced hardware, the KV9204A removes the need for separate switching infrastructure for each generation. It ships in a compact black chassis suited for rack or desktop deployment in IT closets, data centers, and server rooms where space and cable discipline matter.
For integrators managing facilities with legacy equipment still in productive service alongside newer hardware, a switch that bridges both PS/2 and USB server connectivity reduces procurement complexity and avoids forced hardware refreshes on servers that are otherwise performing correctly. The USB console interface means the operator station — keyboard and mouse — connects via standard USB, the universal standard on contemporary workstations and KVM consoles.
Key Features
- Dual-Generation Server Support (PS/2 and USB): Switching between PS/2 and USB server interfaces from one console means you are not locked into a single hardware generation. Rack environments that carried forward older Dell or HP servers alongside newer USB-only units can manage both from one seat without a protocol converter or separate switch.
- USB Console Interface: The operator-side connection uses USB — eliminating the need for PS/2 peripherals at the console. Modern keyboards, mice, and KVM extenders with USB interfaces connect directly without adapters.
- Black Chassis Finish: The black enclosure integrates cleanly into standard 19-inch rack environments and dark-finished server room furniture without visual mismatch.
Integration and Compatibility
The KV9204A is positioned within the broader Black Box KVM and connectivity product line, which spans analog KVM switches, IP-based KVM over IP solutions, and cable infrastructure. Buyers evaluating this unit alongside KVM switches from the same family should confirm port count requirements and whether IP-based remote access is needed — if out-of-band remote management is a priority, an IP KVM variant in the Black Box catalog may be more appropriate. For structured cabling and rack accessories to complete the installation, review compatible rack accessories and KVM cable sets before specifying.
Note: with limited published specification data currently available for the KV9204A, confirm port count, video resolution support, and power requirements directly from the Black Box product datasheet before finalizing a deployment design.
Frequently Asked Questions
Q: What server interface types does the KV9204A support?
A: The KV9204A supports both PS/2 and USB server interfaces, allowing it to manage legacy PS/2-connected servers alongside modern USB-connected servers from a single console.
Q: What interface does the console (operator) side use on the KV9204A?
A: The console side uses USB, so standard USB keyboards and mice connect directly at the operator station without requiring PS/2 adapters.
Q: Is the KV9204A rack-mountable?
A: The KV9204A is designed for rack or desktop deployment. Confirm rack-mount kit requirements and unit size with the Black Box datasheet before ordering.
Q: Where can I find the full technical datasheet for the KV9204A?
A: The complete datasheet, including port count, video resolution, and power specifications, is available on the Black Box manufacturer website under the KV9204A product page.

The KV9204A addresses a specific gap that comes up in server rooms that were built incrementally — PS/2 rack units from an earlier procurement cycle sitting alongside USB-only servers added in later refreshes. Specifying separate switches for each generation adds cost and console clutter; the KV9204A consolidates both under a single USB console connection.
Technical Highlights:
- Mixed-Generation Server Support: PS/2 and USB server ports on the same switch means one piece of infrastructure manages hardware across multiple procurement generations without protocol converters.
- USB Console Interface: Operator-side USB eliminates the need to source PS/2 keyboards or mice for the console station — any contemporary USB HID device works directly.
- Black Chassis: Integrates into standard rack enclosures without finish mismatch — a minor point that matters in customer-facing or audited environments where rack presentation is reviewed.
Deployment Considerations:
- Before specifying, confirm the exact port count and video resolution ceiling from the Black Box datasheet — these are not captured in available evidence and will determine whether this unit fits a high-density or multi-monitor console requirement.
- If remote out-of-band access is part of the requirement, this analog KVM form factor will not provide it — evaluate an IP KVM variant in the Black Box line for that use case.
The KV9204A is the right call for a server room consolidation project where the installed base is genuinely mixed PS/2 and USB, the console seat is USB-equipped, and the requirement is straightforward local switching without IP remote access overhead.
Black Box KVM Switch FOR PS/2 OR USB Servers AND USB - KV9204A
Build Your Complete System
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
Looking for more Black Box products? Shop the full Black Box catalog →
System Design, Deployment & Technical Support
Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.
Fixed scope • Fixed price
System Design Assistance
- Get help validating product compatibility
- Coverage requirements
- Storage planning and deployment architecture before you buy.
Deployment & Configuration Support
- Access fixed-scope support for rollout planning
- User setup guidance
- Migration and system standardization across single-site or multi-site deployments
Guides, Tools & Calculators
- PoE requirements
- Storage retention
- Camera selection and deployment methodology