CREATE TABLE table_21675 ("Name" CLOB, "Raw bandwidth  ( Mbit/s ) " FLOAT, "Transfer speed  ( MB/s ) " CLOB, "Max. cable length  ( m ) " CLOB, "Power provided" CLOB, "Devices per channel" CLOB)

Name the devices per channel for 2560
SELECT "Devices per channel" FROM table_21675 WHERE "Raw bandwidth (Mbit/s)" = '2560'
SELECT "Devices per channel" FROM "table_21675" WHERE "Raw bandwidth (Mbit/s)" = '2560'