SHB-970 Industrial Full Size CPU Card7Setting J81-2 ATX POWER (default)2-3 AT POWER2.3.4 COM2 Jumper Setting(J1, J2, J3)J1, J2, J3 jumpers are used to set up COM2 transmission mode. COM2 supports RS232/422/485.Default [RS232].COM2 RS232(Default) COM2 RS422 COM2 RS485J1 1-3 2-4 J1 3-5 4-6 J1 3-5 4-6J2 1-3 2-4 J2 3-5 4-6 J2 3-5 4-6J3 1-2 J3 3-4 J3 5-6 7-82.4 Interfaces Description2.4.1 SATA(SATA1-SATA4)The CPU card provides 4x SATAII ports.SATA1SATA2SATA3SATA4J1 J2J2J2J2J3J8