user: Question: What is the Devices per channel where the Name is SATA revision 3.0?
Columns: ['Name', 'Raw bandwidth (Mbit/s)', 'Max. cable length (m)', 'Power provided', 'Devices per channel']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['eSATA', '3,000', '2 with eSATA HBA (1 with passive adapter)', 'No', '1 (15 with port multiplier )']
SQL:

assistant: SELECT "Devices per channel" FROM "Table" WHERE "Name" = 'SATA revision 3.0';