Error: No serial console display on EDR-S550 appliance

Products

• Endpoint Detection and Response Hardware

Issue/Introduction

An EDR-S550 appliance does not display any output or CLI interaction during connection.

Environment

EDR-S550 Appliance

Resolution

Perform the following checks to restore console access:

1. Verify that a null modem (crossover) serial cable is in use. Straight-through cables do not work for this hardware.
2. Check the serial terminal settings on the host computer:
   Baud Rate: 9600 
   Data bits: 8
   Parity: None
   Stop bits: 1
   Flow Control: None
3. Ensure the cable is connected to the correct serial port on the rear of the appliance.
4. If the console remains unresponsive after verifying settings and cables, the hardware may have a failed serial controller.

If the hardware failure is confirmed, an RMA is required. Contact Support to initiate an RMA is required.