Serial

No

Yes Through Expansion Connector, needs level shifting

Yes Through Expansion Connector, needs level shifting

Yes Through expansion connector

Yes

Yes DB-9 Connector

Yes DB-9 Connector

Yes Through expansion connector

Yes Through expansion connector

Yes Through expansion connector

Yes 1 RS-232 DB-9 Connector, 2 TTL Level, 1 RS-485

Yes 1.8V Level

Yes Custom connector, 1.8V

Yes Custom connector, 1.8V

Yes 3.3V Level

Yes 3x3.3V Level

Yes 3x3.3V Level

Yes 2 3.3V Level through expansion connector

Yes 1 RS-232 DB-9 Connector, 4 through expansion connector

Yes 4 through expansion connector