2: Introduction
EMG™ Edge Management Gateway User Guide
30
The USB device ports are located on the front of the EMG unit in the I/O module device port bays
). USB device ports can be used with a USB type A connector to serial adapter, if
needed.
I/O Modules
EMG provides two I/O slots for user replaceable I/O modules to be installed on the front side of the
EMG 8500 unit.
shows a sample configuration of an EMG 8500 unit containing one 4 port USB I/O
module in Bay 1 and one 4 port RJ45 I/O module in Bay 2 for a total of 8 device ports.
Note:
When installing the I/O modules, they can be populated or swapped in any order.
One but not both of the slots can be empty. The I/O modules must only be installed on the
front of the unit, never in the connectivity slots on the back.
Figure 2-7 I/O Modules
Bay 1 Bay 2
Table 2-8 Device (DCE Reversed & DTE) Port Pinout
DCE Pin
DTE Pin
Description
8
1
RTS (output)
7
2
DTR (output)
6
3
TXD (output)
5
4
Ground
4
5
Ground
3
6
RXD (input)
2
7
DSR (input)
1
8
CTS (input)
4-port RJ45 I/O module
4-port USB I/O module
I/O Module Device Port Bays
