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MSI MS-9A91 - Page 12

MSI MS-9A91
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1-4
Overview MS-9A91
10
USB 2.0 Port
The USB (Universal Serial Bus) port is for attaching USB devices such as
keyboard, mouse, or other USB-compatible devices. It supports up to 480Mbit/s
(Hi-Speed) data transfer rate.
11
RS232 Serial Port: COM2 (RJ45 to RS232 adapter cable required)
The serial port is a 16550A high speed communications port that sends/
receives 16 bytes FIFOs. It supports barcode scanners, barcode printers, bill
printers, credit card machine, etc. The power voltage is selectable by BIOS.
12
RS232 Serial Port: COM3 (RJ45 to RS232 adapter cable required)
The serial port is a 16550A high speed communications port that sends/
receives 16 bytes FIFOs. It supports barcode scanners, barcode printers, bill
printers, credit card machine, etc. The power voltage is selectable by BIOS.
13
RS232/422/485 Serial Port: COM4
The serial port is a 16550A high speed communications port that sends/
receives 16 bytes FIFOs. It supports barcode scanners, barcode printers, bill
printers, credit card machine, etc. The power voltage is selectable by BIOS.
14
Line-Out Jack
This connector is provided for headphones or speakers.
15
System Power LED (Green)
The power LED glows when the system is turned on and goes o󰘯 when the
system is shut down.
16
Hard Disk Drive LED (Red)
This indicator shows the activity status of the HDD. It 󰘱ashes when the system
is accessing data on the HDD and remains o󰘯 when no disk activity is detected.
17
System Power Button
Press the system power button to turn the system on or o󰘯.