The KVM-21508HD is a standard rack-mountable 21.5-inch LED KVM switch that integrates display, keyboard, mouse, and switch control into a single unit. It supports local management of up to 8 servers and can be cascaded to expand to 64 units. The device delivers high-definition video output that is distortion-free, noise-free, and ghosting-free, and comes standard with a dedicated local expansion port.
1920*1080 21.5" Scalable Remote IP VGA Switch
KVM-21508HD
KVM-21508HD
| Product Features:
1. All-in-One Integrated Design: Combines a 21.5-inch LED TFT LCD display, an ultra-slim silent keyboard, a high-sensitivity touchpad, and a switch into a single unit, saving cabinet space and simplifying cabling and maintenance.
2. High-Definition Display Performance: Supports resolutions up to 1920×1080 at 60 Hz, delivering true-to-life color reproduction and clear, stable images.
3. Convenient Installation Structure: The self-locking slide-out rails can be flexibly adjusted to fit cabinets of varying depths, allowing a single person to complete installation and removal.
4. Comprehensive Keyboard and Mouse Compatibility: Supports connection of a keyboard and mouse via dual USB ports and is compatible with mainstream devices such as optical mice, wireless mice, scroll mice, and mechanical mice.
5. Intelligent Switching Management
○ Supports three switching methods: OSD menu, panel buttons, and custom hotkeys
○ Automatically saves the keyboard’s current working state during switching, ensuring uninterrupted operations
○ Supports automatic scanning with a configurable cycle time of 5–255 seconds
6. Expansion and Compatibility
○ Supports cascading expansion; a single 8-port unit can manage up to 64 servers
○ Fully supports the DDC2B protocol; can detect and display device information even for channels that are not currently switched
○ Compatible with mainstream servers and industrial PCs from IBM, Dell, HP, Sun, Lenovo, Advantech, and Yanshang
○ Supports multiple operating systems, including Windows, Linux, CentOS, Kylin, and Ningsi
| Product Dimensions:

| Product Specifications:
model | KVM-21508HD | |
Number of controlled devices | 8 computers; the cascaded switch can support up to 64 units | |
interface type | USB &VGA | |
switching mode | KVM OSD Menu, Shortcuts, Buttons | |
Hotkey Support | Provide multiple hotkeys (Scroll-Lock / Caps-Lock / Num-Lock / KVM OSD) | |
LCD | size | 21.5-inch TFT LED display with a 16:9 aspect ratio |
resolution ratio | 1920*1080 @ 60HZ | |
Maximum Color | 16.7M | |
luminance | 250 nits (customizable for highlight display) | |
contrast ratio | 1000:1 | |
Show display surface type/Pixel spacing | 476.064(W)×267.786(H) mm 16:9 / 0.297 x 0.297 mm | |
Keyboard/Mouse | Key 104: Ultra-thin silent keyboard with a touchpad featuring a scroll wheel | |
source | Power Adapter: 12V 3.33A | |
Actual power consumption of the entire device | Approximately 18 W | |
Material Technology | Environmental-friendly ROHS-compliant materials | |
Appearance Color | Black high-temperature spray painting dot application process (other colors can be customized) | |
Size (L x W x H) | 695mm*465mm*44mm; | |
Guideway pulling stroke | 115MM | |
Total unfolding height | 435MM | |
Product Weight | Net weight: 16.55 kg; Gross weight: 22.50 kg | |
Install the cabinet | 800-1200mm | |
working temperature | 0℃~60℃ | |
storage temperature | -20℃~70℃ | |
humidity | 0%–80% RH (no condensation) | |
| Product Options:
KVM-21508HD | 21508HD main unit; 8 pieces of 1.8M USB & VGA cables; 1 piece of 1.5M national standard power cable with adapter (1.5 m length). |
Optional | The USB & VGA extension cable supports 3M,5M, or 10M speeds. |
PS/2, USB, and VGA mixed cable |
| List of Parts:

| Product Packaging:


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