user: ### NOW ANSWER:
Question: What i/o buses are associated with the LGA 1155 socket, a code name of Sandy Bridge (Desktop) and a brand name of Core i3-21xx?
Columns: ['Codename (main article)', 'Brand name (list)', 'Cores', 'L3 Cache', 'Socket', 'TDP', 'I/O Bus']
Types: ['text', 'text', 'real', 'text', 'text', 'text', 'text']
Sample row: ['Sandy Bridge (Desktop)', 'Core i3-21xx', 2.0, '3 MB', 'LGA 1155', '65 W', 'Direct Media Interface , Integrated GPU']
SQL:

assistant: SELECT "I/O Bus" FROM "Table" WHERE "Socket" = 'LGA 1155' AND "Codename (main article)" = 'Sandy Bridge (Desktop)' AND "Brand name (list)" = 'Core i3-21xx';