Dell PowerEdge 6650 - Manual (Page 7)

USB Connectors
Your system contains a single USB connector on the front control panel, and two USB connectors on the rear panel for attaching USB-compliant devices.
The following is pin information for the USB connectors. Figure B -6 illustrates the USB connector and Table B -5 defines the pin assignments and interface
signals for the USB connector.
Figure B-6. PIN Numbers for the USB Connector
Integrated NIC Connectors
Your system has two integrated 10/100/1000–Mbps NICs. The 10/100/1000-Mbps NIC provide communication between servers and workstations and efficient
Table B-4. Video Connector Pin Assignments
Pin Signal I/O Definition
1 RED O Red video
2 GREEN O Green video
3 BLUE O Blue video
4 NC N/A No connection
5–8, 10 GND N/A Signal ground
9 VCC N/A VCC
11 NC N/A No connection
12 DDC data out O Monitor detect data
13 HSYNC O Horizontal synchronization
14 VSYNC O Vertical synchronization
15 DDC clock out O Monitor detect clock
Shell N/A N/A Chassis ground
NOTICE: Do not attach a USB device or a combination of USB devices that draw a maximum current over 500 mA per channel or +5 V. Attaching devices
that exceed this threshold may cause the USB ports to shut down. See the documentation that accompanied the USB devices for their maximum current
ratings.
Table B-5. USB Connector PIN
Assignments
Pin Signal I/O Definition
1 Vcc N/A Supply voltage
2 DATA- I/O Data
3 DATA+ I/O Data
4 GND N/A Signal ground