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Chapter: Connectors
3.2.3 USB and LAN
To save space USB and LAN connectors are provided in the form of combo connectors. These either
comprise two USB connectors or two USB connectors and one LAN connector. This way all board variants
provide four external USB channels.
The USB channels support USB 2.0. You may note that the setting of USB keyboard or USB mouse support
in the BIOS-setup is only necessary and advisable, if the OS offers no USB-support. BIOS-setup can be
changed with a USB keyboard without enabling USB keyboard support. Running Windows with these
features enabled may lead to significant performance or functionality limitations.
Every USB interface provides up to 500 mA current and is protected by an electronically resettable fuse.
The board comes in different variants and LAN connectors are one area in which the variants differ. One
variant has two LAN connectors, the first (P1301) is 10/100 LAN and the second (P1302) is 10/100/1000
LAN. There are also two board variants with only a single LAN connector (P1301, P1302 is 2xUSB in this
case). One of these variants has 10/100 LAN, the other has 10/100/1000 LAN.
The 10/100 LAN connector supports 10BaseT and 100BaseT compatible net components with automatic
bandwidth selection. It also offers auto-cross and auto-negotiate functionality. The controller chip is the Intel
82562. PXE and RPL functions are also supported.
The 10/100/1000 LAN connector supports 10BaseT, 100BaseT and 1000BaseT compatible net
components with automatic bandwidth selection. It does not offer auto-cross and auto-negotiate
functionality. The controller chip is the Intel 82541. PXE and RPL functions are not supported.
Pinout USB connector for channel X:
Name
Pin
1
VCC
2
USBX#
3
USBX
4
GND
Pinout LAN 10/100:
Name
Pin
1
LAN1-0
2
LAN1-0#
3
LAN1-1
4
N/C
5
N/C
6
LAN1-1#
page 24
5 volt for USBX
minus channel USBX
plus channel USBX
ground
LAN1 transmit plus
LAN1 transmit minus
LAN1 receive plus
reserved
reserved
LAN1 receive minus
Description
Description
Beckhoff New Automation Technology CB1050
Back Panel Connectors
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