| LOCATION | DESCRIPTION | 
| J17 J28
 | Front Panel LAN1 Link and Activity LED Front Panel LAN2 Link and Activity LED
 | 
| J19 J23
 | Front Panel LAN1 Speed LED Front Panel LAN2 Speed LED
 | 
| J30 J31
 | SATA1 to Backplane SATA2 to Backplane
 | 
| J34 J35
 | USB3 to Front I/O Board USB4 not stuffed
 | 
| J37 J38
 | SATA3 not used SATA4 not used
 | 
| J40 | COM2 Serial Port not used | 
| J45 | LED/Power Control Header to Backplane | 
| J46 | SMDC to Backplane to Service Processor |