IBM 5000 - Manual (Page 100)

Universal Serial Bus Ports
The universal serial bus (USB) is an emerging serial interface standard for
telephony and multimedia devices. Each USB port is a single connector for
devices that previously used serial, parallel, keyboard, mouse, and game ports.
USB technology uses Plug and Play technology to determine which type of device
has been attached to the connector. Each USB device is accessed by a unique
USB address. A device called a hub is used to convert a single USB connector
into multiple attachment points. A hub has multiple ports where peripherals can be
attached. USB provides 12 megabits-per-second (Mbps) bandwidth with a
maximum of 63 peripherals and a maximum signal distance of five meters (16 feet
4.9 inches) per segment.
Note: If more than one USB device is to be attached, the devices must be
connected to a hub. Your Netfinity 5000 server does not support a
keyboard attached to the system USB port.
Your Netfinity 5000 server comes with two USB ports. Table 9 shows the
pin-number assignments for the USB port connectors.
Table 9. USB Port Connector Pin-Number Assignments
Pin Signal
1 VCC
2 − Data
3 + Data
4 Ground
90 Netfinity 5000 Server Hardware Information and Procedures