Introduction
The TRENDnet 16-Port Rackmount VGA KVM Switch, model TK-1603R, is designed to allow users to manage up to 16 computers or servers using a single set of keyboard, monitor, and mouse. This device supports both USB and PS/2 interfaces for the console connection and USB for the PC side. It is compatible with various operating systems including Windows, Linux, and Mac. The TK-1603R offers flexible management options, allowing users to switch between connected PCs via hot-key commands or front panel push buttons. Its hot-pluggable design minimizes downtime when adding or removing PCs.
What's in the Box
Upon unpacking your TRENDnet TK-1603R KVM Switch, please verify that all the following items are included:
- TK-1603R 16-Port Rackmount KVM Switch Unit
- Quick Installation Guide
- Power adapter (9V DC, 1A)
- Rackmount kit
Setup
Follow these steps to set up your KVM switch:
- Mounting the KVM Switch:
The TK-1603R is designed for standard 19-inch (1U) rack mounting. Use the included rackmount kit to secure the device in your server rack. Ensure adequate ventilation around the unit.

Image: Front view of the TK-1603R KVM Switch, showing the front panel with port selection buttons and LED indicators. This view highlights its rack-mountable design.
- Connecting Console Devices:
Connect your keyboard, monitor, and mouse to the console ports on the rear of the KVM switch. The console supports both USB and PS/2 interfaces for keyboard and mouse, and VGA for the monitor.

Image: Rear panel of the TK-1603R KVM Switch, displaying the console ports (USB, PS/2, VGA) on the left and 16 VGA/USB PC connection ports on the right.
- Connecting Computers:
Connect each computer's VGA and USB ports to the corresponding PC ports on the KVM switch. The KVM switch has 16 dedicated ports for connecting up to 16 computers. Compatible KVM cables (e.g., TK-CU06, TK-CU10, TK-CU15) are sold separately.

Image: A diagram showing how to connect up to 16 computers to the KVM switch using VGA and USB/PS2 cables, and how a single monitor, keyboard, and mouse connect to the console side.
- Power Connection:
Connect the included 9V DC, 1A power adapter to the KVM switch's power input and then to a power outlet. The unit will power on automatically.
Operating the KVM Switch
The TK-1603R offers two primary methods for switching between connected computers:
1. Front Panel Push Buttons
Directly press the numbered buttons on the front panel of the KVM switch to select the corresponding computer. The LED indicators will show which computer is currently active (Green for selected, Red for online).
2. Hot-Key Switching
Use specific keyboard hot-key combinations to switch between computers. The default hot-key sequence is typically [Scroll Lock] + [Scroll Lock] + [Port Number]. For example, to switch to computer 5, press Scroll Lock twice, then press '5'. Refer to the Quick Installation Guide for a complete list of hot-key commands and advanced functions.
Auto-Scan Function
The KVM switch features an auto-scan mode that automatically cycles through all connected computers, displaying each for a set duration. This is useful for monitoring multiple systems. Activate and deactivate auto-scan using specific hot-key commands (refer to the Quick Installation Guide).
Audible Feedback
The device provides an audible beep to confirm successful port switching. This feature can usually be enabled or disabled via hot-key commands.
Maintenance
To ensure optimal performance and longevity of your TRENDnet TK-1603R KVM Switch, consider the following maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Avoid using liquid cleaners or aerosols, which may damage the device.
- Ventilation: Ensure that the ventilation openings on the KVM switch are not blocked. Proper airflow is crucial to prevent overheating.
- Cable Management: Keep KVM cables organized and free from kinks or excessive bends to prevent signal degradation.
- Firmware Updates: Periodically check the TRENDnet official website for any available firmware updates for the TK-1603R. Firmware updates can improve performance, add features, or resolve issues.
Troubleshooting
If you encounter issues with your KVM switch, refer to the following common troubleshooting tips:
| Problem | Possible Solution |
|---|---|
| No video display on monitor. |
|
| Keyboard or mouse not responding. |
|
| Hot-key switching not working. |
|
| Poor video quality or flickering. |
|
Specifications
| Feature | Detail |
|---|---|
| Model | TK-1603R |
| Brand | TRENDnet |
| PC Ports | 16 x VGA HDB 15-pin (female) |
| Console Ports (Mouse) | 1 x USB (Type A) / PS/2 (6-pin mini-DIN) |
| Console Ports (Keyboard) | 1 x USB (Type A) / PS/2 (6-pin mini-DIN) |
| Console Ports (Monitor) | 1 x VGA HDB 15-pin (female) |
| Supported Operating Systems | Windows, Linux, Mac OS, Unix |
| Max Video Resolution | 2048 x 1536 VGA |
| Switching Methods | Front Panel Push Button, Hot-Key |
| Rack Mountable | Standard 19” (1U) |
| Power Adapter | 9V DC, 1A |
| Item Dimensions (L x W x H) | 11.8 x 17.75 x 3 inches |
| Item Weight | 4.5 pounds |
| Firmware | Upgradeable via PC port |
| Compliance | NDAA and TAA Compliant (U.S. and Canada Only) |
Warranty and Support
TRENDnet stands by the quality of its products. The TK-1603R 16-Port Rackmount KVM Switch is backed by a 2-year TRENDnet Manufacturer Protection. For detailed warranty terms and conditions, please refer to the official TRENDnet website or the documentation included with your product.
For technical support, product registration, or to download the latest drivers and firmware, please visit the official TRENDnet support page. You can also find additional resources and FAQs there.
Important Note: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm (Proposition 65 warning).





