Enterasys S4-Chassis - Torque Values; COM Port Pinout Assignments; Recommended Torque Values by Screw Size; COM Port Pin Assignments

Torque Values
A-4 Specifications and Regulatory Compliance
Torque Values
Table A-7 describes the recommended torque values to use when installing the using standard
threaded fastener machine screws and bolts.
COM Port Pinout Assignments
The COM port is an RJ45 communications port for local access to local management. Refer to the
Table A-8 for the COM port pin assignments.
Table A-7 Recommended Torque Values by Screw Size
Screw Size Torque in Pounds Bit Size
English Metric -%5 Nominal +%5
N/A N/A 1.42 1.5 1.57 0
2 – 56 1.5 2.85 3.0 3.15 0
4 – 40 2.5 4.75 5.0 5.25 0/1
6 – 32 3.5 8.55 9.0 9.45 1
8 – 32 4.5 17.10 18.0 18.90 2
10 – 32 5 30.40 32.0 33.60 2
1/4 – 20 6.5 63.65 67.0 70.35 3
Table A-8 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