ASROCK iBOX-280 User Manual page 24

ATX/AT Mode
Selection
(3-pin PWR_JP1)
(see p.13, No. 14)
MSATA_SEL1
(Disable SATAII_2)
(3-pin MSATA_
SEL1)
(see p.13, No. 31)
20
1-2 : AT Mode
2-3 : ATX Mode
3 2 1
1-2 : mPCIE
2-3 : mSATA