1. Introduction
The zdyCGTime RJ45 Network Y-Cable is designed to allow a single RJ45 Ethernet port to be shared by two devices, such as two computers or a computer and a printer. This cable facilitates switching network access between these two devices. It is important to understand that this cable does not enable simultaneous network access for both connected devices. Only one device can be active on the network at any given time through this Y-cable.
2. Important Usage Information
This RJ45 Network Y-Cable is NOT a network splitter for simultaneous internet access.
- It does not support two computers connecting to the internet simultaneously.
- It does not split ports on a router or modem to provide multiple active network connections.
- Only one of the two female RJ45 ports can be actively used at any given moment. To switch between devices, ensure the inactive device is disconnected or powered off.
The primary function is to provide a convenient way to switch the physical network connection between two devices without constantly plugging and unplugging cables from the main network source.
3. Package Contents
- 1 x zdyCGTime RJ45 Network Y-Cable (1 Male to 2 Female)
4. Setup Instructions
Follow these steps to connect your RJ45 Network Y-Cable:
- Identify the Main Network Source: Locate the RJ45 Ethernet port on your modem, router, or wall jack that provides the network connection.
- Connect the Y-Cable Input: Plug the single male RJ45 connector of the Y-cable into the main network source port. Ensure it clicks securely into place.

Image: Male RJ45 connector for connecting to the network source.
- Connect Your Devices: Connect your two devices (e.g., two computers, or a computer and a printer) to the two female RJ45 ports on the Y-cable using standard Ethernet cables.

Image: The complete RJ45 Network Y-Cable with one male input and two female outputs.

Image: Close-up of the two female RJ45 output ports.
5. Operating Instructions
To use the RJ45 Network Y-Cable effectively, remember that only one connected device can be active on the network at a time.
- Activate Device 1: Ensure that only the first device (e.g., Computer A) is powered on and connected to one of the Y-cable's female ports. The second device (e.g., Computer B or Printer) should be powered off or disconnected from its Y-cable port.
- Switch to Device 2: To use the second device (e.g., Computer B or Printer), you must first ensure the first device (Computer A) is no longer actively using the network connection. This can be done by powering off Computer A, disconnecting its Ethernet cable from the Y-cable, or disabling its network adapter. Then, ensure Computer B or the Printer is connected and powered on.
This manual switching process allows you to share a single network port between two devices without needing to physically swap the main Ethernet cable.
6. Troubleshooting
- Problem: Neither device or only one device has network access when both are connected and powered on.
Solution: This is expected behavior. The Y-cable is designed for sequential use, not simultaneous. Ensure only one device is actively attempting to use the network connection at a time. - Problem: Network connection is slow or intermittent.
Solution: Ensure all cable connections are secure. Verify that only one device is active. Check the integrity of the Ethernet cables used to connect devices to the Y-cable. Note that this cable supports a data transfer rate of 10 Mbps, which may be slower than modern network requirements. - Problem: The cable does not work with my router/modem to create more ports.
Solution: This Y-cable is not designed to expand the number of active ports on a router or modem. For expanding router ports, a network switch is required.
7. Specifications
| Brand | zdyCGTime |
| Model | 1 |
| Connector Type | RJ45 |
| Cable Type | Ethernet |
| Connector Gender | 1 Male to 2 Female |
| Cable Length | 30.48 cm (1 ft) |
| Ethernet Category | Cat 5 |
| Data Transfer Rate | 10 Megabits per second |
| Number of Pins | 8 |
| Color | Black |
| Recommended Uses | Connecting two computers or a computer to a printer (sequentially) |
8. Maintenance
To ensure the longevity and proper function of your RJ45 Network Y-Cable:
- Keep the cable in a dry environment, away from moisture and extreme temperatures.
- Avoid sharp bends or kinks in the cable, as this can damage the internal wires.
- When disconnecting, always grasp the connector housing, not the cable itself, to prevent strain on the connections.
- Store the cable neatly coiled when not in use to prevent tangling and damage.
9. Warranty and Support
For warranty information or technical support, please refer to the retailer or manufacturer's official website. Keep your purchase receipt as proof of purchase.