🖥️ Raritan KX III G2 vs KX IV-101 vs LX II
AI-powered analysis across 23 matched specifications
Performance Overview
Scores based on quantifiable specification values (1-10 scale)
Detailed Specifications
| Specification | Dominion KX III G2 Raritan | Dominion KX IV-101 Raritan | Dominion LX II Raritan |
|---|---|---|---|
| Key Metrics | |||
| Server ports | 8 / 16 / 32 / 64 (1U) | 1 (single-server) | 8 or 32 |
| Max simultaneous remote users | 8 | 8 | 4 |
| Maximum video resolution | 1920×1080 @ 30fps | 3840×2160 @ 30fps (1080p/1200p @ 60fps) | 1920×1080 |
| Generation / positioning | Enterprise data centre (current gen) | Single-server high-performance (current gen) | SMB / mid-market |
| Latest firmware reference | -- | 4.5.0 (Sept 2025) | -- |
| Video & User Experience | |||
| Maximum resolution | 1920×1080 @ 30fps | 3840×2160 @ 30fps | 1920×1080 |
| 60fps HD support | -- | 1920×1080 and 1920×1200 @ 60fps, 4:4:4 colour | -- |
| Native video input | HDMI, DVI, DisplayPort, USB-C | HDMI (VGA/DVI/Mini DP/USB-C via adapter) | VGA (CIM-dependent) |
| Mouse synchronisation | Absolute / precise | Absolute | Absolute Mouse Synchronisation |
| Client requirements | Browser-based | Java-free browser (Windows/Linux/macOS) or KX IV User Station | Java-free browser |
| Connectivity & Capacity | |||
| Form factor | 1U rack | Compact single-server (fanless) | 1U rack |
| Server ports per appliance | 8 / 16 / 32 / 64 | 1 | 8 or 32 |
| Network interfaces | Dual Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet |
| Tiering / cascading | Yes — 1,000+ targets from one UI | Managed via CC-SG | Limited |
| Virtual media | Yes | Yes — 3× faster than KX III | Yes |
| Security & Authentication | |||
| Encryption | AES (FIPS 140-2 validated) | AES (FIPS-validated) | AES |
| Directory services | LDAP, Active Directory, RADIUS | LDAP, Active Directory, RADIUS | LDAP, Active Directory |
| RADIUS support | Yes | Yes | No |
| Smartcard / CAC passthrough | Yes | Yes | -- |
| Management | |||
| CommandCenter Secure Gateway | Yes | Yes | Yes |
| Browser client | Java-free | Java-free (Win/Linux/macOS) | Java-free |
| Dedicated user station hardware | -- | KX IV User Station (for 4K) | -- |
| Audit logging & role-based access | Yes | Yes | Yes (basic) |
Expert Analysis
These three appliances are not really competing for the same rack slot — they cover three distinct points in Raritan's KVM-over-IP portfolio, and the right choice is dictated almost entirely by the shape of the estate you are managing. The KX III G2 is the workhorse data-centre switch (8 to 64 ports, eight concurrent users, dual GigE, tiering to 1,000+ targets). The KX IV-101 is a single-server appliance built around 4K video and modern out-of-band access for high-value hosts. The LX II is the budget mid-market option — fewer users, fewer features, lower price.
For UK enterprise data centres and colocation cabinets, the KX III G2 is the obvious pick. It is the only one of the three that scales to 64 directly-attached servers per 1U, supports HDMI/DVI/DisplayPort/USB-C natively, and cascades cleanly under CommandCenter Secure Gateway — useful if you are consolidating multiple sites under one pane of glass for NIS2 or ISO 27001 audit trails. Its weakness is video: 1080p at 30fps is fine for server consoles but noticeably behind the KX IV when engineers are working on graphical workloads or 4K-attached management hosts.
The KX IV-101 wins where image quality and modern client support matter more than density: a broadcast control room, a trading-floor jump host, a CAD/engineering workstation in a secure enclave, or any single high-value server where you want 4K at the desk or 1080p/1200p at 60fps with full 4:4:4 colour. The fanless design also suits deployments outside the data hall. The catch is the one-server-per-appliance economics — deploy ten of them and you have ten devices to patch, although CC-SG masks that operationally.
The LX II remains relevant for smaller UK sites — branch comms rooms, NHS trust satellite sites, education MDFs — where you need secure remote console access for 8 or 32 servers, AD integration and AES encryption, but do not need RADIUS, eight concurrent users, or 4K. If your requirement is genuinely SMB-scale and budget-led, it is the most cost-effective Raritan in the line-up. If you are buying for a primary data centre, do not compromise — go KX III G2 and use KX IV-101s selectively for the hosts that warrant 4K.
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