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Appendix A: Specifications
A-2 2E43-51/2E43-51R User’s Guide
A.4 ENVIRONMENTAL REQUIREMENTS
A.5 INPUT/OUTPUT PORTS
A.6 COM PINOUT ASSIGNMENTS
The COM port is a serial communications port that supports Local
Management or connection to a UPS.
Table A-1 shows the COM port pin assignments.
Operating Temperature: 5°C to 40°C (41°F to 104°F)
Storage Temperature: -30°C to 73°C (-22°F to 164°F)
Operating Relative Humidity: 5% to 90% (non-condensing)
ENET 1 through ENET 4
(ports 1 through 4):
Ethernet (10BASE-T compliant) with
RJ21 type connectors. Each connector
provides connection for 12 twisted pair
ports.
Slots for optional Fast Ethernet
Interface Modules
(ports 5 and 6):
Slots accept three types of optional Fast
Ethernet Interface Modules:
FE100-TX, FE100-FX, and FE100-F3.
Slot for optional HSIM: Slot accepts optional High Speed
Interface Modules.
Table A-1 COM Port Pin Assignments
Pin Signal Name Input/Output
1 Transmit Data (XMT) Output
2 Data Carrier Detect (DCD) Output
3 Data Set Ready (DSR) Input
4 Receive Data (RCV) Input
5 Signal Ground (GND) NA
6 Data Terminal Ready (DTR) Output
7 Request to Send (RTS) Input
8 Clear to Send (CTS) NA