Gigabyte R281-3C0 Service Manual page 33

13 Slimline SAS connector #1 (SATA1)
14 Clear CMOS jumper
15 SATA DOM support power connector (for sSATA connector #4)
16 SATA DOM support power connector (for sSATA connector #5)
17 NCSI swtich
18 OCP mezzanine connector#2 (with KR signal)
19 Riser slot connector #2
20 NVMe upgrade key
21 Power supply connector#1 (primary)
22 Power supply connector#2 (secondary)
23 2 x 3 Pin Rear back plane board power connector
24 2 x 7 Pin HDD back plane board power connector
25 2 x 4 Pin GPGPU power connectors
26 2 x 2 Pin extention ard power connectors
- 33 - Hardware Installation