E5813A AGILENT TECHNOLOGIES, E5813A Datasheet - Page 21

• Manufacturer Part Number: E5813A
• Description: Networked 5-Port USB Hub
• Manufacturer: AGILENT TECHNOLOGIES

Specifications of E5813A

• No. Of Ports: 5
• Hub Style: Powered
• Supply Voltage: 230V
• Lead Free Status / RoHS Status: na

E5813A Networked 5-Port USB Hub
Each USB device reports its power requirements to the
operating system, which then enables and disables the device as
a function of its power requirements, and the amount of
available power. High- speed devices typically need to be
connected to a self- powered hub, which obtains power from its
external power supply and provides up to 500 mA for each
downstream port. Only simple devices, such as a mouse, can be
connected to a bus- powered hub, which obtains power from its
upstream host and provides up to 100 mA for each downstream
port.
Due to the limited available power for bus- powered hubs,
cascading two bus- powered hubs is an illegal topology, and
devices connected to the second hub will not function. (USB
specifications limit the connection of a bus- powered hub to a
self- powered hub or host only.)
According to the USB Specification, the maximum limit of hubs
cascaded in series cannot exceed five. In other words, you may
have a maximum of five hubs between any device and the host.
This does NOT mean that the maximum number of hubs in a
system is five. Indeed, up to seven hubs can be connected
parallel at any given level. You must tally both external and
embedded hubs when counting downstream hubs.
The E5813A contains a self-powered USB hub and can be used to power
N O TE
simple or high speed USB devices.
E5813A Networked 5-Port USB Hub
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