![](/images/backgrounds/293827/asrock-imb-a180-owner-s-manual10x1.png)
1.4 I/O Panel
1 | 2 | 3 | 4 | 5 |
6
7
| 13 | 12 | 11* | 10 | 9 | 8 | |
1 | USB 2.0 Ports (USB01) |
| 8 | USB 2.0 Ports (USB4_5) |
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2 | Serial Port (COM1) |
| 9 | USB 3.0 Ports (USB2_3) |
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3 | Serial Port (COM2) |
| 10 | HDMI Port (HDMI2) |
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4 | LAN | 11 | HDMI Port (HDMI1)* |
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5 | LAN |
| 12 |
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6 | Front Speaker (Lime) |
| 13 | PS/2 Keyboard/Mouse Port | |||
7 | Microphone (Pink) |
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There are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications.
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| ACT/LINK | SPEED | |||
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| LAN Port LED Indications |
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| Activity/Link LED |
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| SPEED LED |
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Status |
| Description |
| Status |
| Description |
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Off |
| No Link |
| Off |
| 10Mbps connection |
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Blinking | Data Activity |
| Orange | 100Mbps connection |
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On |
| 100Mbps connection | Green |
| 1Gbps connection |
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| COM1/COM2 RS232/422/485 Pin Mapping |
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PIN |
| RS232 |
| RS422 |
| RS485 |
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| 1 |
| DCD, Data |
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| TX- |
| RTX- |
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| carrier detect |
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| 2 |
| RXD, Receive |
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| RX+ |
| N/A |
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| data |
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| 3 |
| TXD, Transmit |
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| TX+ |
| RTX+ |
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| data |
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| 4 |
| DTR, Data |
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| RX- |
| N/A |
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| terminal ready |
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| 5 |
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| GND |
| GND |
| GND |
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* HDMI1 port on the I/O panel is for
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