User`s manual

UPort 1400/1600 Series User’s Manual Driver Installation
2-2
USB Usage Limitations for UPort
1. A maximum of 4 UPorts can be connected to each host. Connecting more than 4 UPorts will
cause system resources to become low and unstable.
2. We recommend connecting the UPort directly to the host USB port. If you need to use an
external USB hub, only the first level is recommended.
3. In general, there are 2 types of USB hub:
i. High power hubs require an external power adaptor, and provide 500 mA of power to
the USB port.
ii. Low power hubs get power from the host PC, and provide 100 mA of power to the USB
port.
The following table shows what type of USB hub should be used with UPort 1400/1600
products.
UPort 1400
with bus power
UPort 1400
with external power
UPort 1600-8 UPort 1600-16
High power HUB
(500 mA)
OK OK OK OK
Low power HUB
(100 mA)
Not Supported OK OK OK
4. Although UPort can operate using USB 1.1, to get the best and most stable performance, we
recommend using a USB 2.0 host controller or HUB.
Installing the Driver
1. Run the Setup program located on the UPort 1400/1600 Document and Software CD-ROM.
Click Next to Start installing the driver.