ROCK Pi S > Getting Started > Troubleshooting
Check the serial console
1. By default, the ROCK Pi S uses the colorful 26PIN GPIO header PIN19 and PIN21.
2. The USB to TTL chip must support 1.5Mbps baud rate, some cheap USB to TTL chip can not support such high baud rate.
Default non-root user
user: rock password: rock
Package ssh is pre-installed on ROCK Pi S system image.
To access ROCK Pi S by SSH, try
ping ip-of-device ssh rock@ip-of-device
ping rockpis.local ssh firstname.lastname@example.org