: Try connecting the Rockey 200 to a different USB port, preferably a USB 2.0 port directly on the computer's motherboard (such as ports on the back of a desktop PC), as compatibility can be an issue with USB 3.0 hubs.
Rockey 200 Driver GSM-Forum: Comprehensive Troubleshooting and Setup Guide rockey 200 driver gsm-forum
Rockey 200 (SIMCom SIM800H or similar core – check your version ) Type: Industrial GSM/GPRS modem, USB / RS232 (DB9) / TTL Purpose: SMS, voice, GPRS data, IoT, alerting systems : Try connecting the Rockey 200 to a