NEC Express5800 Series EXP320B - Manual (Page 64)

2-20 General Description
(7) LED board connector
(8) Fan connector
(9) Jumper switch for CMOS/password clearing
(10) Lithium battery
(11) Processor #1 socket (CPU#1)
(12) Processor #2 socket (CPU#2)
(13) HCS-A connector (unavailable)
(14) Fan connector (unavailable)
(15) HCS-B connector (unavailable)
(16) Jumper switch for BMC configuration