CREATE TABLE table_48920 ("Model Number" TEXT, "Clock Speed" TEXT, "L2 Cache" TEXT, "FSB Speed" TEXT, "Voltage Range" TEXT, "Socket" TEXT)

Name the Model Number which has a FSB Speed of 400 mhz?
SELECT "Model Number" FROM table_48920 WHERE "FSB Speed" = '400 mhz'
SELECT "Model Number" FROM "table_48920" WHERE "FSB Speed" = '400 mhz'