NEC SP B-Series - Manual (Page 15)

1-4 Technical Information
Front Features – Minitower Models
A – CD-ROM/DVD Drive B – Diskette Drive
C – Power Lamp D – Power Button
E – Disk Lamp F – Reset Button
Rear Features – Minitower Models
A – Power Socket B – Mouse Port
C – Keyboard Port D – USB Ports
E – Serial Port 1 F – Serial Port 2
G – Audio Connectors H – Video Connector
I – Parallel Port