1.5.3LED Definition Front Panel
| LED |
| Color | State | Description | ||
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| Power |
| Green | ON | Power ON | ||
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| OFF | OFF | Power OFF | |
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| HDD Activity |
| Amber | Blinking | HDD access activity | ||
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| OFF | OFF | No disk activity | |
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| LAN1/LAN2 Activity |
| Green | ON | LAN connected | ||
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| Green | Blinking | LAN access activity | |
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| OFF | OFF | LAN disconnected | |
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| Warning |
| Reserved LED for future upgrade. It is not functional in | ||||
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| the B2891 barebone now. |
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| Hot Swappable HDD |
| Green | ON | Power connected | ||
| Tray Power LED |
| OFF | OFF | Power disconnected | ||
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| Hot Swappable |
| Amber | Blinking | HDD access activity | ||
| HDD Tray Access |
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| LED (U4H only) |
| OFF | OFF | No disk activity | ||
| Rear I/O LED |
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| LED |
| Color |
| State | Description | |
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| RJ45 NIC1 Linkage |
| Green |
| ON | LAN linked | |
| (Left Side) |
| Green |
| Blinking | LAN accessing | |
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| OFF |
| OFF | No LAN linked | |
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| RJ45 NIC1 Mode |
| Amber |
| ON | Gigabit mode | |
| (Right Side) |
| Green |
| ON | 100M mode | |
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| OFF |
| OFF | 10M mode | |
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| RJ45 NIC2 Linkage |
| Green |
| ON | LAN linked | |
| (Left Side) |
| Green |
| Blinking | LAN accessing | |
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| OFF |
| OFF | No LAN linked | |
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| RJ45 NIC2 Mode |
| Amber |
| ON | Gigabit mode | |
| (Right Side) |
| Green |
| ON | 100M mode | |
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| OFF |
| OFF | 10M mode | |
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8 | Chapter 1: Overview |
