ALIF4021T - Switch Adder - Free user manual and instructions
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| Type of product | KVM Switch |
| Brand | Adder |
| Model | ALIF4021T |
| Category | Switch (Interrupteur) |
| Dimensions (W x D x H) | 220 mm x 150 mm x 44 mm |
| Weight | 1.1 kg |
| Power Supply | 12V DC, 2A max (AC adapter included) |
| Power Consumption | 12W max |
| Input Ports | 2x DVI-D, 2x USB Type B, 1x audio jack |
| Output Ports | 2x DVI-D, 4x USB Type A, 1x audio out |
| Maximum Resolution | 1920 x 1200 (WUXGA) |
| Refresh Rate | 60 Hz |
| Maximum Cable Length | 50 m (Cat5e/6) |
| System Compatibility | Windows, Linux, Mac OS |
| Security Features | Administrator password, port locking |
| Supported Protocols | DDC/CI, EDID emulation |
| Operating Temperature | 0 to 40 °C |
| Operating Humidity | 20% to 80% RH (non-condensing) |
| Maintenance and Cleaning | Use a soft dry cloth. Do not use abrasive or solvent cleaners. |
| Safety and Certifications | CE, FCC, RoHS, cULus |
| Spare Parts and Repairability | Modular design; replaceable power adapter; firmware upgradeable. |
| Package Contents | Main unit, AC adapter, quick start guide, 2 m DVI cables, rack mounting plates (optional) |
| Warranty | 2 years |
Frequently Asked Questions - ALIF4021T Adder
Does the ALIF4021T support 4K resolution?
No, the ALIF4021T is designed for WUXGA (1920x1200) at 60 Hz. For 4K support, you would need a higher-end model.
How do I connect USB devices to the switch?
Connect the USB peripherals to the USB Type A ports on the console side. Then connect each computer's USB port to the Type B ports on the switch using standard USB cables.
Can I extend the distance between my computer and console?
Yes, using Cat5e/6 cables you can extend the connection up to 50 meters with optimal signal quality.
Is the switch compatible with HDMI monitors?
The switch uses DVI-D outputs. You can use a passive DVI-D to HDMI adapter to connect to HDMI monitors. Note that audio may not be transmitted through this connection.
How do I update the firmware?
Download the firmware from the Adder website, connect the switch to your computer via USB, and use the firmware update tool to upload the new version.
What are the default administrator credentials?
The default admin username is admin and the password is adder. We strongly recommend changing this after the first login for security.
Can I use the switch with audio?
Yes, the switch supports analog audio via 3.5mm jacks. Connect the audio inputs to your computers and the output to your speakers or headset.
What should I do if the screen flickers?
Check that the EDID emulation is enabled, and verify the cable quality and length. Also ensure the monitor resolution is set to a supported value. If the issue persists, try a factory reset.
How do I perform a factory reset?
Use a paperclip to press the reset button on the back panel for 10 seconds. This restores the switch to its default settings, including the admin password.
Does the switch support hot keys to switch between computers?
Yes, you can use hotkey sequences (e.g., Scroll Lock + Scroll Lock) to cycle through connected computers. Refer to the user manual for the full list of shortcuts.
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USER MANUAL ALIF4021T Adder
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Product information
Brand : Adder
Model : ALIF4021T
Category : Switch