CREATE TABLE table_6311 ("Model" TEXT, "Codename" TEXT, "Capacities  ( GB ) " TEXT, "NAND type" TEXT, "Interface" TEXT, "Form factor" TEXT, "Controller" TEXT, "Seq. read/write MB/s" TEXT, "Rnd 4KB read/write IOPS  ( K ) " TEXT, "Introduced" TEXT)

What form factor has capacities at 60/120/180/240?
SELECT "Form factor" FROM table_6311 WHERE "Capacities (GB)" = '60/120/180/240'
SELECT "Form factor" FROM "table_6311" WHERE "Capacities (GB)" = '60/120/180/240'