1. Introduction
This manual provides instructions for the installation, operation, and maintenance of the Coolgear Gigabit Ethernet USB3.1 Gen 1 Adapter with 4KVrms Isolation and Mounting Kit. This device allows you to add a high-speed Gigabit Ethernet port to your computer via a USB 3.1 Gen 1 connection, offering robust network connectivity with enhanced electrical isolation for industrial and critical applications.
2. Key Features
- Compliant with USB Specification 3.1 Gen 1 (5 Gbps), backward compatible with USB 2.0 and USB 1.1.
- Adds a single RJ45 Gigabit Ethernet Port (10/100/1000M).
- Features 4KVAC electrical isolation for the Ethernet port, enhancing protection in demanding environments.
- Supports Wall Mounting Kit and Optional DIN RAIL for industrial critical applications.
- Easy installation for Windows (Plug and Go), also supports Linux and Mac OS X.
- Supports all USB Power Saving Modes.
- Complies with IEEE 802.3, 802.3u, 802.3ab, 802.1Q, and IEEE 802.3az-2010 (Energy Efficient Ethernet).
- Supports Jumbo Frames up to 9K Bytes.
- Supports Microsoft AOAC (Always On Always Connected).
- LED indicators for Ethernet status (LINK/ACT) and data transferring speed.
- Built-in IPv4/IPv6 packet Checksum Offload Engine (COE).
- Supports Suspend mode and remote wake-up, crossover detection, and auto-correction.
- Equipped with 1 Upstream USB3.1 Type-B connector with Screw Lock Mechanism.
3. Package Contents
Verify that all items are present and in good condition upon opening the package:
- Coolgear Gigabit Ethernet USB3.1 Gen 1 Adapter
- Mounting Kit
- USB 3.1 Type-B to Type-A Cable
- User Manual (this document)
Figure 3.1: Contents of the Coolgear Gigabit Ethernet USB3.1 Gen 1 Adapter package, showing the adapter, mounting bracket, and USB cable.
4. Setup and Installation
4.1 Physical Connection
- Connect the USB Cable: Insert the USB Type-B end of the provided USB 3.1 cable into the USB 3.1 Gen 1 port on the adapter. Connect the USB Type-A end to an available USB 3.1 (or 3.0/2.0) port on your computer.
Figure 4.1: USB 3.1 Gen 1 Type-B port for host connection.
- Connect the Ethernet Cable: Connect a standard RJ45 Ethernet cable from your network router, switch, or wall jack to the RJ45 port on the adapter.
Figure 4.2: RJ45 Gigabit Ethernet port with LINK/ACT and SPEED LEDs.
4.2 Driver Installation
For Windows operating systems, the adapter is designed for "Plug and Go" functionality, meaning drivers typically install automatically upon connection. For Linux and Mac OS X, built-in drivers are often available, or specific drivers may be required depending on your system version. Refer to the Coolgear website for the latest driver information if automatic installation does not occur.
4.3 Mounting Kit Installation (Optional)
The included mounting kit allows for secure installation of the adapter. The adapter slides into the bracket, which can then be affixed to a surface using screws or other appropriate fasteners. This is particularly useful for industrial or fixed installations.
Figure 4.3: Adapter shown with its detachable mounting bracket.
5. Operation
Once connected and drivers are installed, the adapter will automatically establish a network connection. Observe the LED indicators on the RJ45 port for status:
- LINK/ACT LED:
- Solid Green: Indicates a successful network link.
- Blinking Green: Indicates network activity (data transmission).
- SPEED LED:
- Solid Amber: Indicates a 100 Mbps connection.
- Solid Green: Indicates a 1000 Mbps (Gigabit) connection.
- Off: Indicates a 10 Mbps connection.
- PWR LED: (Located near USB port)
- Solid Green: Indicates the device is powered on.
Figure 5.1: Front view of the adapter, highlighting the Ethernet port and LED indicators.
6. Maintenance
The Coolgear Gigabit Ethernet USB3.1 Gen 1 Adapter is designed for durability and requires minimal maintenance. Follow these guidelines to ensure optimal performance and longevity:
- Cleaning: Use a soft, dry cloth to clean the exterior of the adapter. Do not use liquid cleaners or aerosols.
- Environment: Operate the adapter within its specified temperature and humidity ranges. Avoid exposing it to extreme temperatures, direct sunlight, or excessive moisture.
- Connections: Periodically check all cable connections to ensure they are secure.
- Firmware/Drivers: While not frequently required, occasionally check the Coolgear website for any updated drivers or firmware that may improve performance or address issues.
7. Troubleshooting
If you encounter issues with your Coolgear Gigabit Ethernet USB3.1 Gen 1 Adapter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No network connection / LINK/ACT LED is off. |
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| Slow network speed / SPEED LED indicates lower speed than expected. |
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| Adapter not recognized by computer / PWR LED is off. |
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8. Specifications
| Feature | Detail |
|---|---|
| Model Number | CG-31G1EA4K |
| Hardware Interface | USB 3.1 Gen 1 (Type-B), RJ45 Ethernet |
| Data Link Protocol | Gigabit Ethernet (10/100/1000 Mbps) |
| Data Transfer Rate | Up to 5 Gigabits Per Second (USB 3.1 Gen 1) |
| Ethernet Isolation | 4KVrms |
| Supported Standards | IEEE 802.3, 802.3u, 802.3ab, 802.1Q, 802.3az-2010 |
| Jumbo Frame Support | Up to 9K Bytes |
| Compatible Operating Systems | Windows 11, 10, 8.x, 7, Vista, XP; Linux; Mac OS X |
| Dimensions (L x W x H) | 2.56in x 1.67in x 0.81in (65.0 x 42.5 x 20.5 mm) |
| Item Weight | 2 ounces |
| Color | Gray |
9. Warranty and Support
Coolgear products are designed for reliability and performance. For specific warranty information, please refer to the warranty card included with your product or visit the official Coolgear website. For technical support, driver downloads, or further assistance, please contact Coolgear customer service through their official channels.
Coolgear Official Website: www.coolgear.com
