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Retiga 3000 USER MANUAL
Determining if a USB port is on a Root Hub
As discussed above, if a PC or laptop has only USB 2.0 ports or USB 3.0 ports that use third party host
controllers, the cameras will be fully functional and the supplied USB 3.0 card is not required. If you elect to
use a native USB port rather than the supplied USB 3.0 card, please ensure that the port you use is on its own
dedicated Root Hub with no other devices connected.
Each USB host controller on a PC or laptop has a Root Hub to which multiple physical ports are connected.
Each port can have a device plugged in or another hub to allow connection of more devices. However, the
Retiga 3000 camera should be the only device connected to a single USB Root Hub. If other devices are
connected to the same Root Hub, then camera communication may fail, which can result in camera hanging or
image tearing.
Since it is not always straightforward to tell which port on a PC is connected to which Root Hub, follow the
procedure below to make sure that the camera is the only device connected to its particular Root Hub.
1. Open Device Manager (click the Start Button and type “Device Manager”)
2. In the menu, click View -> Devices by Connection (Figure 1)
3. According to Figure 2, find the USB host controllers, expand them, and check whether your camera
is the only device connected to the Root Hub.
Figure 1. Devices by connection
Figure 2. Photometrics USB2 camera is the only device on its
USB Root Hub.
Summary of Contents for Retiga 3000
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