What should I do if my Sealevel USB Hub is not functioning correctly?

The HUB7i, HUB7P, HUB7M, and HUB4PH products are generic USB hubs and should provide years of trouble-free service. Should the device appear to not be functioning correctly, the following tips can eliminate most common problems without the need to call Technical Support.

1. Make sure the power supply is connected to the hub and to a live AC power outlet. The green LED on the front of the unit will be lit, indicating the hub is properly powered. Inspect the power supply or call for a replacement if the green LED does not light after connecting to power.
2. Make sure the hub is connected to a USB port using the included USB cable or quality replacement USB cable. The yellow LED will be lit when the hub is properly enumerated by the operating system.
3. The hub is supported in any USB aware operating system that supports generic USB hub devices, including Windows 98/ME/2000/XP/Vista/7™ operating systems and Linux (kernel v2.4 or better). Check to make sure that USB support is enabled in the System BIOS, and it is functioning properly in the operating system. This can be done by using Device Manager in Windows.
4. If the red LED lights, there is a fault condition with one of the downstream USB ports. When a downstream USB peripheral pulls more than 500mA of power, the over current protection current will shut down the hub until the problem is resolved.
5. Disconnect your USB peripherals one at a time until the red LED goes out. Inspect the problem USB peripheral and replace, if necessary. Try connecting a different USB peripheral to the problem port. If the red LED lights on the same USB.

The HUB4SSBA and HUB7SSBA are generic SuperSpeed USB hubs and should provide years of trouble-free service. Should the device appear to not be functioning correctly, the following tips can eliminate most common problems without the need to call Technical Support.

1. Make sure the power supply is connected to the hub and to a live AC power outlet.
2. Make sure the hub is connected to a USB port using the included USB cable or quality replacement USB cable.
3. The hub is fully supported as a USB 3.1 hub device in any operating system that supports SuperSpeed USB hub devices, including Windows 8, Windows 10 and Windows 11.
4. The hub is supported as a USB 2.0 hub device in any USB-aware operating system including Windows XP/7, Linux (kernel v2.4 or better), Apple (Apple OS X 10.4+), and other USB-aware operating systems. Check to make sure that USB support is enabled in the System BIOS and it is functioning properly in the operating system. This can be done by using Device Manager in Windows.
5. When a portable device (PD) is connected to a downstream port of the HUB7SSBA, the PD enumerates with either a SuperSpeed connection or a legacy USB connection (High-Speed, Full- Speed, or Low-Speed).
   • If a SuperSpeed USB connection is established, the corresponding LED for that port will illuminate green.
   • If a non-SuperSpeed USB connection is established, the corresponding LED for that port will illuminate yellow.
   • The LEDs should remain unlit until a USB connection is detected.
6. When a downstream USB peripheral pulls more than 1500mA of power from ports 1,2,3,4,5, or 6, the overcurrent protection will shut down the port until the problem is resolved.
7. When a downstream USB peripheral pulls more than 2400mA of power from port 7, the overcurrent protection will shut down the port until the problem is removed.
8. On Windows 10 and Windows 11, if the problem device is not removed from the HUB7SSBA within 3 seconds, the overcurrent event will be reported to the host as shown below: Click on the “Power surge on the USB port” notification to open the prompt shown below:
9. Click on the “Power surge on the USB port” notification to open the prompt shown below:
10. The LED associated with the downstream port will turn off when in overcurrent shutdown; use the state of the LEDs to determine which port incurred the overcurrent shutdown. Disconnect your USB peripheral attached to the port in overcurrent shutdown. If the port remains unpowered, reset the HUB7SSBA by disconnecting the upstream host & external power and then reconnect them. Inspect the problem USB peripheral and replace, if necessary. Try connecting a different USB peripheral to the problem port. If the port remains unpowered after following the steps above, contact technical support for further assistance.

If these steps do not solve your problem, please call Sealevel Systems’ Technical Support, (864) 843-4343. Our technical support is free and available from 8:00 AM to 5:00 PM Eastern Time Monday through Friday. For email support, contact support@sealevel.com.