Setting Up A Usb Network; Usb Cables - Freecom USB DAT-40ES User Manual

Setting up a USB network

USB is very user friendly. The interface automatically assigns addresses to devices; you simply need to
connect a USB device to a USB port on a system using a USB cable. If you have many USB devices
or need to place a device away from your system, you may place up to a maximum of five USB hubs
between the device and host system and connect them with additional cables.
If you are using a high-speed (USB 2.0) device, make sure that the USB host at the system and all the
hubs between the device and host support high-speed (USB 2.0) transfer.
When using a bulk transfer device, such as a tape drive, do not use other USB devices that will place
restrictions on the USB bandwidth available to the bulk transfer device.
If several USB device requiring large amounts of the USB network bandwidth are to operate
simultaneously, an additional host must be added to the system. Each device must then be placed into
the separate networks starting at the different hosts. An additional host is typically a new USB HBA,
which plugs into the host system's PCI slot, creating a new USB host that resides on the network. (Note:
if several USB adapters are placed into a system, demands on the bandwidth of the system bus will
constrain the USB devices' performance.)
Always use USB logo-ed components in your USB network. This is the best and easiest method to
ensure reliable operation.

USB cables

USB cables are available in a variety of lengths. The maximum cable length is 5 meters. If you need to
place a USB device further than 5 meters from the system, you must use a hub.
Do not use USB cable extenders or couples. These are not recognized or approved by the USB
organization. The USB specification does not allow their use and they are likely to reduce the reliability of
the USB network or cause it not to work completely.
Internal and external USB devices use the same USB cables.
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USB Configuration Guide