IBM 8478 Hardware Maintenance Manual - Page 92

Universal, Serial, connectors

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8 1 Table 11. Ethernet RJ-45 connector pin-number assignments. Pin Signal Pin Signal 1 + Transmit data 5 Not connected 2 - Transmit data 6 - Receive data 3 + Receive data 7 Not connected 4 Not connected 8 Not connected Universal Serial Bus connectors Your server has two Universal Serial Bus (USB) connectors, which are configured automatically. USB is a serial interface standard for telephony and multimedia devices. It uses Plug and Play technology to determine the type of device that is attached to the connector. Notes: 1. If you attach a standard (non-USB) keyboard to the keyboard connector, the USB connectors and devices will be disabled during the power-on self-test. 2. If you install a USB keyboard that has a mouse connector, the USB keyboard emulates a mouse, and you will not be able to disable the mouse settings in the Configuration/Setup Utility program. USB cables and hubs: You need a 4-pin cable to connect devices to USB 2 or USB 3. If you plan to attach more than two USB devices, you must use a hub to connect the devices. The hub provides multiple connectors for attaching additional external USB devices. USB technology transfers data at up to 12 megabits-per-second (Mbps) with a maximum of 127 external devices and a maximum signal distance of five meters (16 ft) per segment. USB connectors: There are two USB connectors located on the rear of the server for attaching USB-compatible devices, see "I/O connector locations" on page 72 for the location of the USB connectors. The table below shows the pin-number assignments for the USB connectors. 82 Hardware Maintenance Manual: xSeries 200

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8
1
Table
11.
Ethernet
RJ-45
connector
pin-number
assignments.
Pin
Signal
Pin
Signal
1
+
Transmit
data
5
Not
connected
2
-
Transmit
data
6
-
Receive
data
3
+
Receive
data
7
Not
connected
4
Not
connected
8
Not
connected
Universal
Serial
Bus
connectors
Your
server
has
two
Universal
Serial
Bus
(USB)
connectors,
which
are
configured
automatically.
USB
is
a
serial
interface
standard
for
telephony
and
multimedia
devices.
It
uses
Plug
and
Play
technology
to
determine
the
type
of
device
that
is
attached
to
the
connector.
Notes:
1.
If
you
attach
a
standard
(non-USB)
keyboard
to
the
keyboard
connector,
the
USB
connectors
and
devices
will
be
disabled
during
the
power-on
self-test.
2.
If
you
install
a
USB
keyboard
that
has
a
mouse
connector,
the
USB
keyboard
emulates
a
mouse,
and
you
will
not
be
able
to
disable
the
mouse
settings
in
the
Configuration/Setup
Utility
program.
USB
cables
and
hubs:
You
need
a
4-pin
cable
to
connect
devices
to
USB
2
or
USB
3.
If
you
plan
to
attach
more
than
two
USB
devices,
you
must
use
a
hub
to
connect
the
devices.
The
hub
provides
multiple
connectors
for
attaching
additional
external
USB
devices.
USB
technology
transfers
data
at
up
to
12
megabits-per-second
(Mbps)
with
a
maximum
of
127
external
devices
and
a
maximum
signal
distance
of
five
meters
(16
ft)
per
segment.
USB
connectors:
There
are
two
USB
connectors
located
on
the
rear
of
the
server
for
attaching
USB-compatible
devices,
see
“I/O
connector
locations”
on
page
72
for
the
location
of
the
USB
connectors.
The
table
below
shows
the
pin-number
assignments
for
the
USB
connectors.
82
Hardware
Maintenance
Manual:
xSeries
200