Gateway ALR 9200 Processors and Related Connectors, VRM, Processor, Installed, Installed, VRM Function, USB External Connector (O), Table 2: Processors and VRMs

Note:

A second USB port internal to the system chassis is provided at position FF as shown in Figure 3 on page 11

The keyboard controller is functionally compatible with the 8042A microcontroller. The system can be locked automatically if no keyboard or mouse activity occurs for a predefined length of time, if specified through the SSU. Once the inactivity (lockout) timer has expired, the keyboard and mouse do not respond until the previously stored password is entered.

USB External Connector (O)

One universal serial bus (USB) port provides connection for a growing list of peripheral components including mouse, keyboard, joystick, monitor, tape and diskette drives. Up to 127 devices can be daisy-chained from the port. The USB port also provides hot-swap capability and dynamic resource allocation for all peripherals attached to it with data transfer rates of up to 12 Mbps. USB drivers are provided as a part of most major operating systems and should require no special procedures for implementation or use.

Processors and Related Connectors

VRM Connectors (P, Q, R, S, T, U)

In this system each processor must have one VRM to adjust the voltage supplied to the processor core and one to adjust the voltage supplied to the second-level cache in the SEC cartridge. The first VRM is dedicated to a single processor and provides the correct power to the processor core. The second VRM provides power to the integrated second-level cache and can support the cache on two SEC cartridges. Therefore each processor requires

1.5VRMs. See Table 2 for the allowed processor and VRM configurations.Table 2: Processors and VRMs

Processor	VRM	VRM Function
Installed	Installed
Processor 1	VRM 1	Powers the processor core for processor 1
	VRM 2	Powers the second-level cache for processors 1 and 2
Processor 2	VRM 3	Powers the processor core for processor 2
Processor 3	VRM 4	Powers the processor core for processor 3
	VRM 5	Powers the second-level cache for processors 3 and 4
Processor 4	VRM 6	Powers the processor core for processor 4

20 Maintaining and Troubleshooting the Gateway ALR 9200 Server