1. Okwu mmalite
The D-Link DUB-H4 is a 4-port USB 2.0 hub designed to expand the number of available USB ports on your computer or laptop. This device allows for easy connection of multiple USB 1.1 or 2.0 peripherals such as printers, digital cameras, scanners, and webcams. Featuring Plug & Play functionality, the DUB-H4 requires no special configuration or driver installation and is compatible with Windows, Mac, and Linux operating systems.
2. Ihe ngwugwu
Biko chọpụta na ngwungwu gị nwere ihe ndị a:
- D-Link DUB-H4 4-Port USB 2.0 Hub
- USB 2.0 Type-A to Type-B Cable
- Power Adapter (5V == 2.5A)
3. Ngwaahịa gafereview
The DUB-H4 hub provides four downstream USB Type-A ports for connecting your USB devices and one upstream USB Type-B port for connecting to your computer or another USB hub. It supports high-speed data transfer rates of up to 480 Mbps and includes LED indicators for port activity.

Foto 3.1: N'ihu-elu view of the D-Link DUB-H4 USB Hub, showing its compact black design and four USB Type-A ports.

Foto 3.2: N'azụ view of the D-Link DUB-H4 USB Hub, illustrating the USB Type-B upstream port and the DC 5V == 2.5A power input.
4. Nhazi ntuziaka
- Jikọọ ihe nkwụnye ọkụ: Insert the power adapter cable into the DC 5V == 2.5A input port on the rear of the DUB-H4 hub. Plug the other end of the power adapter into a standard electrical outlet.
- Jikọọ na Kọmputa gị: Use the provided USB 2.0 Type-A to Type-B cable. Connect the Type-B end to the upstream USB port on the rear of the DUB-H4 hub. Connect the Type-A end to an available USB port on your computer.
- Jikọọ ngwaọrụ USB: Plug your USB devices (e.g., mouse, keyboard, printer, external hard drive) into the available USB Type-A ports on the DUB-H4 hub.
- Nchọpụta akpaaka: The DUB-H4 is Plug & Play. Your operating system should automatically detect and install the necessary drivers for the hub. No manual driver installation is typically required.
5. Ntuziaka ọrụ
Once the DUB-H4 hub is connected and recognized by your computer, it operates transparently. Simply connect your USB devices to the hub's downstream ports. The hub will manage power distribution and data transfer for all connected devices. LED indicators on the hub will typically illuminate to show active connections and data transfer.
6. Nlekọta
To ensure optimal performance and longevity of your D-Link DUB-H4 hub, follow these maintenance guidelines:
- Nhicha: Disconnect the hub from power and your computer before cleaning. Use a soft, dry cloth to wipe the exterior. Avoid using liquid cleaners or abrasive materials.
- Ọnọdụ gburugburu: Operate the hub within its specified temperature range of 0 to 40 °C (32 to 104 °F). Avoid exposing the device to extreme temperatures, humidity, or direct sunlight.
- Njikwa USB: Ensure all cables are connected securely and are not excessively bent or strained.
7. Nchọpụta nsogbu
If you encounter issues with your D-Link DUB-H4 hub, consider the following troubleshooting steps:
- Amataghị ngwaọrụ:
- Ensure the hub's power adapter is securely connected to a working electrical outlet.
- Verify that the USB cable connecting the hub to your computer is properly seated at both ends.
- Try connecting the USB device directly to your computer's USB port to confirm the device itself is functional.
- Test the hub with a different USB port on your computer.
- Nyefee data nwayọ:
- Ensure all connected devices are USB 2.0 compatible for optimal speeds. USB 1.1 devices will operate at their native slower speeds.
- Avoid connecting too many high-bandwidth devices simultaneously if experiencing performance issues.
- Okwu ike:
- Confirm the power adapter is correctly connected and providing power. The hub requires external power for reliable operation, especially with multiple devices.
- If using a power strip, ensure it is switched on and functioning.
If these steps do not resolve the issue, please refer to the D-Link support resources mentioned in Section 9.
8. Nkọwapụta
| Ụdị | D-njikọ |
| Nọmba nlereanya | DUB-H4 |
| Agba | Nwa |
| Interface | USB 2.0 |
| Ọnụọgụ nke ọdụ ụgbọ mmiri | 4 x USB Type-A (downstream), 1 x USB Type-B (upstream) |
| Ọnụego mbufe data | Ruo 480 Mbps |
| Ndakọrịta sistemụ arụmọrụ | Windows 7/Vista/XP, Mac OS X 10.4 or higher, Linux |
| Atụmatụ pụrụ iche | OHCI, EHCI, Plug and Play, LED indicators |
| Ihe onwunwe | Polycarbonate |
| Akụkụ (L x W x H) | 12.1 x 8.7 x 9 cm |
| Ntinye ike | DC 5V = 2.5A |
| Okpomọkụ na-arụ ọrụ | 0 ruo 40 Celsius (32 ruo 104 Celsius) |
9. Akwụkwọ ikike Ozi
The D-Link DUB-H4 is covered by a manufacturer's warranty. D-Link provides a three-year warranty against manufacturing defects for this product. Please retain your proof of purchase for warranty claims.
10. Nkwado
Maka nkwado teknụzụ, ndebanye aha ngwaahịa, ma ọ bụ budata ndị ọkwọ ụgbọ ala na ngwa ngwa, biko gaa na nkwado D-Link gọọmentị website. You can typically find support resources by searching for your product model (DUB-H4) on their websaịtị.
Onye ọrụ D-Link Websaịtị: www.dlink.com





