ASROCK EPC612D8A-TB User Manual page 38

Chassis ID0 Jumper
(3-pin Chassis ID0)
(see p.7, No. 43)
Chassis ID1 Jumper
(3-pin Chassis ID1 )
(see p.7, No. 45)
Chassis ID2 Jumper
(3-pin Chassis ID2)
(see p.7, No. 47)
32
Reserved for system level
use
Reserved for system level
use