What is the intro date for the interface that equals pci?
CREATE TABLE table_29778616_1 (intro_date VARCHAR, interface VARCHAR)
SELECT intro_date FROM table_29778616_1 WHERE interface = "PCI"
### Context: CREATE TABLE table_29778616_1 (intro_date VARCHAR, interface VARCHAR) ### Question: What is the intro date for the interface that equals pci? ### Answer: SELECT intro_date FROM table_29778616_1 WHERE interface = "PCI"