Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_26910 ( "Codename (main article)" text, "Brand name (list)" text, "Cores" real, "L3 Cache" text, "Socket" text, "TDP" text, "I/O Bus" text )

### 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?

### Accurate SQL ###

SELECT "I/O Bus" FROM table_26910 WHERE "Socket" = 'LGA 1155' AND "Codename (main article)" = 'Sandy Bridge (Desktop)' AND "Brand name (list)" = 'Core i3-21xx'