BECKHOFF CB4051 User Manual
Page 27

USB 1 to 4, LAN, Sound
Chapter: Connectors
Beckhoff New Automation Technology CB4051
page 27
Description
Name
Pin
Name
Description
5 volt for USB1
USB1 VCC
1
2
USB2 VCC
5 volt for USB2
USB- channel 1
USB1#
3
4
USB2#
USB- channel 2
USB+ channel 1
USB1
5
6
USB2
USB+ channel 2
ground
GND
7
8
GND
ground
USB+ channel 3
USB3
9
10
USB4
USB+ channel 4
USB- channel 3
USB3#
11
12
USB4#
USB- channel 4
5 volt for USB3
USB3 VCC
13
14
USB4 VCC
5 volt for USB4
LAN activity
ACTLED
15
16
SPEEDLED LAN 10/100 speed
LAN RX+
LANRX
17
18
LANTX
LAN TX+
LAN RX-
LANRX#
19
20
LANTX#
LAN TX-
digital output SPDIF
SPDIFO
21
22
3.3V
3.3 volt supply
digital input SPDIF
SPDIFI
23
24
S_AGND
analog ground sound
sound output right / 
frond output right
LOUT_R / 
FRONT_R
25
26
LOUT_L / 
FRONT_L
sound output left / 
frond output left
AUX input right / 
rear output right
AUXA_R / 
REAR_R
27
28
AUXA_L / 
REAR_L
AUX input left / 
rear output left
microphone input 1 / 
center output
MIC1 / 
CENTER
29
30
MIC2 / 
LFE
microphone input 2 / 
LFE output 
