Nvidia NFORCE 650I - Manual (Page 13)

Mainboard nForce 650i Ultra
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4. Repeat steps 1, 2 & 3 for the remaining RAM modules.
Back Panel Configuration
PS/2 Mouse & PS/2 Keyboard Ports: KB/MS
These mainboards provide a standard PS/2 mouse port and a PS/2 keyboard port.
USB Ports/LAN Ports: USB1, USB/LAN1
There are four onboard USB 2.0/ 1.1 ports on the back panel. These USB ports are used to
attach with USB devices, such as keyboard, mice and other USB supported devices. There is
also one 10/100/1000 Mbps Ethernet LAN ports available for you to attach an Internet cable.
＊ The pictures above are for reference only. Your actual
installation may vary slightly from the pictures.