Nvidia NFORCE 650I - Manual (Page 17)

Mainboard nForce 650i Ultra
13
CASE OPEN
COM1
Headers & Jumpers
Case Open Warning Header: CASE OPEN
This header is used to warn the user when the computer case has been
previously opened. Please connect the header with a cable to your case
directly. (Make sure that your computer case provides this “case open”
cable.)
Serial Interface Header: COM1
The mainboard provides one COM1 header for you to connect an
external serial connector on the back panel of your case. Attaching
the serial connector by a cable (Optional) onto this header, then you
can use the serial connector to attach with a mic, modem or other
peripheral device.
Front USB Headers: USB0/1, USB2/3
The mainboard provides four onboard USB 1.1/2.0 ports on the back panel that attach to USB
devices. There are two additional USB headers that can be connected by cables to four more
USB ports on the front panel of your case giving you a possible eight USB ports.
Pin Assignment Pin Assignment
1 5V_Dual 2 5V_Dual
3 D- 4 D-
5 D+ 6 D+
7 GND 8 GND
USB0/1/2/3
9 Key 10 N/C
Attention
If you are using a USB 2.0 device with Windows2000/XP, you will need to
install the USB 2.0 driver from the Microsoft ® website. If you are using
Service pack 1 (or later) for Windows ® XP, and using Service pack4 (or
later) for Windows® 2000, you will not have to install the driver.