Dell
17 Peripherals
17.1 USB
All PowerEdge systems have a minimum of 2
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 | |
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4 | (Lowest) | Internal USB peripherals | No other Controller is disabled |
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3 |
| Front USB | Controller 4 is disabled as well |
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2 |
| Back USB | Controllers 3 & 4 are disabled as well |
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1 | (Highest) | Remote Access (RAC) | Controllers 2,3, & 4 are disabled as well |
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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
PowerEdge R210 Technical Guide | 61 |