Table schema:
CREATE TABLE table_name_93 (channels VARCHAR, clock_rate__mhz_ VARCHAR, bandwidth__mb_s_ VARCHAR)

Question: Clock rate (MHz) smaller than 400, and a Bandwidth (MB/s) of 1420 has what channels?
SQL: SELECT channels FROM table_name_93 WHERE clock_rate__mhz_ < 400 AND bandwidth__mb_s_ = 1420