Dell 3250 - Table 36. USB Connector Pinout; Universal Serial Bus (USB) Interface

203
Universal Serial Bus (USB) Interface
The main board provides a double-stacked USB port and the peripheral board provides two single
USB port connectors. See Table 36. These built-in USB ports permit the direct connection of four
USB peripherals without an external hub. If more devices are required, an external hub can be
connected to either of the built-in ports.
Table 36. USB Connector Pinout
Pin Signal Dual USB
Connector
Single USB
Connector
A1
Fused Voltage Controlled Current (VCC)
(+5 V /w overcurrent monitor of both port 1 and 2)
A2 USBPxM (differential data line)
A3 USBPxP (differential data line)
A4 GND (ground)
B1
Fused VCC (+5 V /w overcurrent monitor of both
port 1 and 2)
B2 USBPxM (differential data line)
B3 USBPxP (differential data line)
B4 GND (ground)