The TESmart HDK0402A1U is a 4x2 HDMI + DP Dual Monitor KVM Switch designed to integrate cross-platform computer devices and simplify device management, particularly for dual-display multimedia workstations.
Function Description:
This KVM switch allows a single set of a keyboard and mouse to control up to two computers, each connected to two monitors. It supports two distinct display modes to cater to different user needs. In Display Mode 1, users can either duplicate or extend displays from a single PC across two monitors. This is achieved by connecting two video ports (HDMI and DisplayPort) from the same PC to a single group of input ports on the KVM. The effect is identical to connecting the PC directly to two displays, ensuring correct display information is always maintained thanks to built-in EDID emulators in each input port. Display Mode 2 allows for displaying different PCs on two separate monitors, and it also supports swapping the images between the two monitors. When different PCs are displayed on different monitors, users can switch the focus between them by double-clicking the Right-[Alt] key on the connected keyboard.
The KVM switch offers multiple methods for switching between input devices:
- Front Panel Buttons: A "Select" button on the front panel allows users to cycle through connected PCs. LEDs indicate the currently selected computer.
- IR Remote Control: The remote control provides dedicated buttons for cyclically selecting PC 1 and PC 2, switching between display modes, swapping desktops in Display Mode 2, and directly switching to PC 1 or PC 2, with corresponding keyboard and mouse focus.
- Keyboard Hot Keys: Users can switch input sources and perform other functions using specific hotkey combinations. The default trigger hotkey is [Scroll Lock], pressed twice within 2 seconds, followed by a command (e.g., [PgUp] for previous port, [PgDn] for next port, [1] or [2] for specific ports). Hotkeys also allow switching to Display Mode 2, focusing on PC 1 or PC 2 desktops in Display Mode 2, switching focus between different PCs in Display Mode 2 (Right-[Alt] twice), and enabling/disabling a buzzer sound ([F11]).
- Mouse Wheel Switch Mode: While not explicitly detailed, the manual mentions this as a switching method.
The device also includes an extra USB 2.0 port, enabling the connection of various USB devices such as barcode scanners or USB hard drives. It supports hot-plugging, allowing devices to be connected or disconnected without turning off the PC.
Important Technical Specifications:
- Video Inputs: HDMI and DisplayPort (DP) for dual monitor support.
- Video Outputs: HDMI for connecting to two displays.
- Resolution: Supports resolutions up to 3840x2160@60Hz 4:4:4.
- USB Ports: Includes a standard USB 2.0 port for additional devices and dedicated USB ports for keyboard and mouse input.
- Audio Output: L/R audio output for connecting to speakers.
- Operating Systems: Compatible with Unix, Windows, Debian, Ubuntu, Fedora, MacOS X, Raspbian, and other Linux-based systems.
- Power Supply: DC 12V power adapter.
Usage Features:
- Dual Monitor Support: Controls two monitors with one keyboard and mouse for two computers.
- Two Display Modes: Offers flexibility for extended display, duplicate display, or displaying different PCs on two monitors.
- EDID Emulators: Each input port has EDID emulators to ensure PCs always receive correct display information (supported in Display Mode 1).
- Hot Plug Support: Allows for connecting and disconnecting devices without powering down the PC.
- Keyboard and Mouse Pass-Through Mode: Improves compatibility with a wider range of keyboards and mice, allowing for more advanced functions not typically supported by traditional KVMs. This mode treats the keyboard and mouse as if they are directly connected to the computer.
- Free Combination Switching: Simplifies usage by allowing flexible switching between configurations.
- No Delay After Switching: Ensures immediate usability of keyboard and mouse after switching.
- Buzzer Sound: Can be enabled or disabled via hotkey.
Maintenance Features:
- Warranty: The product comes with a one (1) year warranty from the date of shipment for material and workmanship defects under normal use. Repairs for defects not covered by warranty are available at current parts and labor prices, with a six (6) month warranty on such repairs.
- Cleaning: The product should be cleaned with a dry cloth.
- Safety Guidelines: Users are advised to keep the product away from water, ignition sources, and heat-producing settings. It should not be touched with wet hands. The power supply should be unplugged during thunderstorms or extended periods of non-use.
- Battery Disposal: Waste batteries (for the remote control) should be disposed of according to local regulations and not exposed to open fire or overheating.
- No Unauthorized Repairs: Users are explicitly warned not to remove or repair the product without authorization.
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