Key Technical Specifications
- Display Size: 17-inch True Color LCD
- Resolution: 1024 x 768 (Max)
- Color Depth: 16.2 Million Colors
- Brightness: 300 cd/m²
- Contrast Ratio: 1000:1
- Physical Size: 1U High, 19-inch Wide Rackmount
- Dimensions: 554mm (W) x 41.5mm (H) x 440.4mm (D)
- Keyboard Interface: PS/2 and USB Auto-Sensing
- Video Interface: 15-pin Mini Connector (VGA)
- OS Compatibility: Windows 9x/2k/XP, NT, UNIX, LINUX, NOVELL, DOS
- Operating Temp: 0°C to 55°C
Product Introduction
Server racks get hot, and space is always at a premium. When you’re dealing with legacy Westinghouse infrastructure, dragging out a standalone monitor and keyboard for every troubleshooting session is a waste of time. The WESTINGHOUSE ST24B3 solves this by packing a 17-inch LCD, a full keyboard, and a touchpad into a dense 1U form factor. I’ve used these exact units in data centers where floor space was tighter than a drum, and being able to slide this out and manage the rack without unbolting a CRT monitor is a massive time-saver.Engineers stick with the ST24B3 because it doesn’t require software drivers to function. It relies on hardware-level auto-sensing for both PS/2 and USB connections, meaning you can plug it into a 20-year-old DOS server or a newer Windows XP box, and it just works. The 1024×768 resolution is plenty for command-line interfaces and legacy SCADA screens. Just keep in mind that this specific revision runs warm; make sure your rack fans are actually pushing air through that 1U gap, or the backlight will fail prematurely.
Quality SOP & Tech Pitfalls
The Lab Report
We don’t just wipe the dust off and ship these. Every WESTINGHOUSE ST24B3 goes through a strict validation process before it leaves the bench. First, we do a visual and counterfeit check to ensure the LCD panel isn’t a cheap aftermarket swap. Next, it goes on our live test rack where we verify the PS/2 and USB auto-sensing actually toggles correctly. We check the backlight uniformity and test all keyboard keys using a membrane tester. Finally, we log the firmware version and pack it in anti-static shielding.The Engineer’s Warning
Here is a brutal truth about these older KVMs: they are notoriously picky about keyboard states. If you hot-swap between servers and your Caps Lock or Num Lock gets stuck in the wrong state, the ST24B3 can sometimes fail to pass the keystroke to the new host. Always take a photo of your DIP switches or OSD menu settings before pulling the old unit. I once spent four hours on a site trying to figure out why a KVM wasn’t passing video, only to realize a previous tech had accidentally bumped the contrast down to zero via the hidden OSD hotkeys. Test the OSD buttons before you install it.
Installation & Configuration Guide
- Pre-Installation: ⚠️ Power down the target servers if possible. Take a clear photo of the rear cabling and any front-panel DIP switch configurations. Wait 60 seconds for rack capacitors to discharge.
- Removal: Label the VGA, USB, and PS/2 cables before unplugging. Release the front DIN clips or rear mounting ears carefully; 1U metal edges are sharp and will slice your knuckles.
- Installation: Copy the DIP switch/jumper settings exactly. This prevents 90% of startup headaches where the KVM defaults to the wrong video timing. Slide the WESTINGHOUSE ST24B3 into the 19-inch rails until it clicks. Secure the rear mounting ears.
- Power-On & Testing: Reconnect the 3-in-1 VGA/USB/PS2 cable. Power on the rack. Verify the Westinghouse boot logo appears. Check the OSD menu to confirm brightness and input source. Test keyboard passthrough on at least two connected servers to verify the auto-scan function.
Compatible Replacement Models
| Compatibility Tier | Model / Action | Notes |
|---|---|---|
| ✅ Drop-in Replacement | WESTINGHOUSE ST24B3 | Direct hardware match. No reconfiguration needed. |
| ⚠️ Software Compatible | Generic 1U KVM w/ Auto-Sense | Same physical fit, but requires verifying OSD button mapping and hotkey sequences. Budget ~1 hr for testing. |
| ❌ Hardware Mod Required | 2U KVM Consoles | Requires rack modification and new mounting rails. Do not use unless upgrading the entire rack layout. |
Frequently Asked Questions (FAQ)
Can I hot-swap this KVM while the servers are running?
Yes, the ST24B3 is designed for hot-swapping. However, give it a solid 3 to 5 seconds between switching hosts. If you toggle too fast, the USB handshake will drop, and you’ll be staring at a frozen screen.Does it require any drivers for Windows Server or Linux?
No. This is a purely hardware-based emulation module. The operating system sees a standard PS/2 keyboard, a standard PS/2 mouse, and an analog VGA monitor. If your OS doesn’t need drivers for a basic keyboard, it won’t need them for this.The screen is completely black, but the power LED is on. Is it dead?
Probably not. The backlight inverter is often the culprit on these aging 17-inch panels, or someone accidentally turned the brightness to zero via the OSD. Shine a flashlight directly at the screen at an angle. If you can faintly see the desktop, your backlight or inverter has failed.Will this work with modern USB-only servers?
It should, thanks to the auto-sensing feature. But I’ve seen it struggle with servers that only have USB 3.0 ports and no legacy PS/2 support. If you’re connecting to a brand-new server, use a high-quality USB-A to USB-A cable, not a cheap adapter.How do I reset the OSD if I locked myself out?
Unplug the KVM from the rack completely. Hold down the ‘Menu’ button on the front panel while plugging the power back in. Keep holding for about 10 seconds. This forces a factory reset on most Westinghouse KVM revisions.Is the 1024×768 resolution enough for modern applications?
For managing servers, SCADA, or industrial PLCs, absolutely. If you’re trying to run a modern web browser with 40 tabs open, you’ll hate it. But for command-line management and legacy industrial control, this resolution is the sweet spot for readability without scaling issues.
