RAVPower RP-WD01 for Windows - Manual (Page 7)

4> Internet: There are two available Internet Access options.
a. Access Point (AP) + Client: Connecting the Wi-Fi SD/USB to another wireless
device to have the internet access.
5> DDNS Setting: Enable DDNS to allow users to remotely access the device by a register
hostname, and the default setting is “ Enable DDNS: off”