Yeastar Technology P550 - Install Yeastar P570 Telephony Module; Telephony Module Installation Steps

Installation Guide | 3 - Install PBX | 24
Note: Before installing the module, check if the module is clean and intact.
1. Loosen the screws at the bottom of the device and remove the upper cover.
2. Push out the empty board from the inside of the device.
3. Push in the Expansion Board (EX08 or EX30).