Hello List,
Does anybody know the maximum length that a USB cable can safely be? I
want to wire up a printer on the other side of a room - probably about 20
feet away, allowing for a couple of twists and turns. Also, where can I
buy such a thing?
To quote <http://developer.apple.com/hardware/usb/whyusb.htm>
The cables for high-speed and low-speed devices differ in
construction. High-speed USB device cables require shielding and two
twisted-pair wires inside. One twisted pair provides power,
nominally +5V (4.3 to 5.3 V at 100ma) for devices connected directly
to the host, and ground. A powered hub can provide up to 500ma of
+5V. See "USB Hub Devices" (page 1-23) for a description of the
services a hub provides on the USB. The other pair of wires is for
data I/O signals. Low-speed cables are untwisted and do not require
shielding.
High-speed cables are most common, and appear as patch cables to
attach hubs to hubs, or attach high-speed devices to a hub.
Low-speed cable length can be up to 3 meters, and high-speed cable
length up to 5 meters.
Have fun,
Shay
--
=========================== Shay Telfer ================================
Perth, Western Australia Technomancer Join Team Sungroper, race the
Opinions for hire [POQ] 2003 World Solar Challenge
[EMAIL PROTECTED] fnord <http://sungroper.asn.au/>
