ATEN KL1508AN 8-Port Cat5 Dual Rail Rack LCD KVM Switch
Overview
The ATEN KL1508AN is a 1U rack-mount, dual-rail LCD KVM switch that gives data center and server room operators direct console access to up to 8 servers from a single integrated keyboard, monitor, and touchpad — all without consuming extra rack space for a separate crash cart. The integrated LCD panel slides out on a dual-rail mechanism, keeping the drawer flush when not in active use. For environments that need to scale beyond 8 ports, the KL1508AN supports daisy-chaining up to 256 servers across a tiered switch stack, making it a practical anchor for mid-size data centers that expect to add density over time. For a broader look at rack console switches and accessories, explore the full ATEN KVM and console switch catalog.
Key Features
- 8 Ports Expandable to 256 via Daisy-Chain: Start with 8 connected servers and scale to 256 by cascading additional switches. This means you're not locked into a forklift upgrade when the rack fills — just add a downstream switch and the KL1508AN integrates it into the same OSD navigation tree.
- Integrated LCD Console at 1920 × 1200 @ 60 Hz: The built-in second console output supports up to 1920 × 1200 resolution at 60 Hz — sharp enough for detailed server CLI work and modern GUI-based management interfaces. A 250 cd/m² luminance rating keeps the panel readable under typical raised-floor fluorescent lighting without straining.
- Three Port-Selection Methods (OSD, Hotkey, Pushbutton): Operators can switch between connected servers via on-screen display menus, keyboard hotkeys, or front-panel pushbuttons. Hotkey switching is the fastest path during an active incident — no hands off keyboard, no mousing to a menu.
- PS/2, USB, and Serial Keyboard/Mouse Support: Supporting all three keyboard and mouse interfaces — PS/2, USB, and serial — means the KL1508AN connects to legacy infrastructure alongside current-generation servers without requiring interface adapters on every port. Mixed-vintage server rooms are the exact use case this covers.
- Configurable Scan Interval (1–255 Seconds): The auto-scan function cycles through connected servers at an interval you set anywhere from 1 to 255 seconds. A tighter interval (5–10 sec) lets a single operator visually monitor multiple servers for alerts without switching manually; a longer interval conserves attention for deeper per-server review.
- Front USB Mouse Port: A front-panel USB Type-A female port provides direct mouse connectivity at the console without routing cabling to the rear — useful during initial rack commissioning or when swapping a peripheral quickly under time pressure.
- LED Illumination Light: An integrated LED illumination light on the front panel improves visibility inside the rack drawer in low-light environments — a practical detail in data centers where raised-floor lighting is inconsistent or where aisles are only lit when someone is working in them.
- Firmware Upgradeable (Latest: v1.7.161): Firmware version v1.7.161 (released 2025-06-17) is the current shipping version. Field-upgradeable firmware means you can apply security patches and feature updates without replacing hardware — important for any console device with direct server access.
- Universal AC Power Input (100–240V, 50–60 Hz, 1A): The wide-range power supply accepts any standard AC input from 100V to 240V at 50 or 60 Hz. Deploy it in North American 120V racks, European 230V facilities, or anywhere in between without a step-down transformer or power conditioning.
- Humidity Tolerance to 80% RH Non-Condensing: Rated for up to 80% relative humidity (non-condensing), the KL1508AN handles the ambient conditions of most commercial data center environments — including older facilities without precision cooling where humidity control is imperfect. Non-condensing is the standard caveat: don't move a cold unit into a hot, humid room without letting it acclimate.
Integration & Compatibility
The KL1508AN integrates into existing rack KVM switch deployments via Cat 5 cabling, which reduces cable bulk compared to traditional VGA+PS/2 runs and makes high-density cable management practical. Keyboard and mouse compatibility covers PS/2, USB, and serial — addressing the full range of server generations you're likely to find in a mixed infrastructure environment. Port selection via OSD gives a named, navigable list of connected servers rather than requiring operators to memorize port-to-server assignments, which matters as the stack scales beyond a handful of units.
For teams managing racks alongside rack power distribution and management infrastructure, the KL1508AN fits cleanly into a 1U slot and its daisy-chain architecture keeps the port count aligned with rack growth. Pairing with a structured network switching infrastructure running Cat 5e or better cabling makes full use of the Cat 5 KVM interface spec.
If your deployment spans multiple physical locations or requires remote access, review ATEN's broader IP KVM and remote access switch line — the KL1508AN is a local-console device and does not provide built-in IP/network remote access.
Frequently Asked Questions
Q: How many servers can the KL1508AN manage directly, and what is the maximum with daisy-chaining?
A: The KL1508AN provides 8 direct KVM ports. By daisy-chaining compatible ATEN switches, the total managed port count scales to a maximum of 256 servers from the master switch's OSD.
Q: What keyboard and mouse interface types does the KL1508AN support on the server side?
A: The KL1508AN supports PS/2, USB, and serial keyboard and mouse connections, covering both legacy and current-generation server interface standards in a mixed-vintage environment.
Q: What is the LCD panel resolution on the KL1508AN's integrated console?
A: The integrated second console output supports 1920 × 1200 at 60 Hz with a panel luminance of 250 cd/m².
Q: How do I switch between servers on the KL1508AN?
A: Port selection is available via three methods: the on-screen display (OSD) menu, keyboard hotkeys, and front-panel pushbuttons. Hotkey switching is the fastest option for keyboard-focused workflows.
Q: Can I upgrade the KL1508AN's firmware in the field?
A: Yes. The KL1508AN supports field firmware upgrades. The current firmware version is v1.7.161, released 2025-06-17. The upgrade file is available from ATEN's support site.
Q: What power supply does the KL1508AN require?
A: The KL1508AN accepts universal AC input: 100–240V, 50–60 Hz, 1A maximum. No step-down transformer is required for North American or European rack installations.
The KL1508AN is the switch I'd recommend when a team needs a clean, local-console KVM anchor for a growing rack environment — the daisy-chain architecture that expands to 256 ports is what separates it from single-tier 8-port units that dead-end your infrastructure. The 1920 × 1200 second console output at 60 Hz is a meaningful detail: you're not squinting at a 1024 × 768 panel when reviewing server logs or running a GUI-based BMC interface.
Technical Highlights:
- 256-Port Daisy-Chain Ceiling: Starting at 8 ports with a clear path to 256 means this switch accommodates multi-rack environments without replacing the master console unit — the investment scales forward.
- 1–255 Second Scan Interval: Fully configurable auto-scan lets a single operator run a lightweight visual sweep of all connected servers. At a 5-second interval across 8 servers, that's a 40-second full cycle — tight enough to catch a hung server before it becomes a user-impacting outage.
- Universal 100–240V AC Input: No power conditioning required regardless of facility voltage standard. This matters in co-location environments where you may not control the PDU spec on a per-rack basis.
Deployment Considerations:
- The KL1508AN is a local-console device — if remote IP access is a requirement, pair it with an ATEN IP KVM extender or evaluate ATEN's IP-enabled KVM line instead. Don't assume built-in network remote access.
- Serial keyboard/mouse support covers legacy infrastructure, but verify your Cat 5 adapter compatibility per server model before racking — not all Cat 5 KVM adapters support every server's serial console pinout.
The KL1508AN fits best in a server room or co-location cage where a permanent, high-resolution local console is needed and port count will grow over 12–24 months — it's the right anchor switch for a 2–5 rack build-out where you want one OSD tree managing everything.
