Dell R210 manual Peripherals, 17.1 USB, USB Device

Dell

17 Peripherals

17.1 USB

All PowerEdge systems have a minimum of 2 front-accessible USB 2.0 compliant ports with enough spacing around to accommodate full usage of both connectors simultaneously along with any/all other front panel features (Video connector, buttons, LED’s, etc.) without mechanical interference. These ports are connected to the same controller and not shared with internal or back USB ports

For security reasons, all external USB ports must have an enable/disable function.

Disabling USB controllers must observe the hierarchy in Table 29 (listed from lowest to highest priority in a 4 controller design).

Internal USB ports connected to internal persistent storage devices have an enable/disable function independent of the other ports present in the system.

Table 29. USB Controller Priorities

USB Controller		Function	If Disabled
4	(Lowest)	Internal USB peripherals	No other Controller is disabled
3		Front USB	Controller 4 is disabled as well
2		Back USB	Controllers 3 & 4 are disabled as well
1	(Highest)	Remote Access (RAC)	Controllers 2,3, & 4 are disabled as well

The above hierarchy dictates that connections that are lower in the hierarchy must be disabled anytime a higher level connection is disabled (e.g., when Back USB is disabled the Front USB ports are also disabled).

17.2 USB Device

Optional external USB DVD-ROM.

PowerEdge R210 Technical Guide 61