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18.
Parallel port (optional). This 25-pin port connects a parallel printer, a scanner, or other
devices.
19.
Serial port (optional). This 9-pin COM port is for pointing devices or other serial devices.
D640MB/ M640MB/ W640MB/ S640MB Front panel
SATA port
M.2 drive installed
SATA6G_1
X
SATA6G_2
X
SATA6G_3
O
SATA6G_4
O
SATA6G_5
O
SATA6G_6
O
Note: Refer to the table above to see which SATA ports
are unavailable (X) and which ports are available (O)
while an M.2 drive is installed.
The M.2 socket shares bandwidth with SATA6G_1 and SATA6G_2 ports. When an M.2 drive is
installed on the M.2 socket, SATA6G_1 and SATA6G_2 ports are unavailable.
1.
5.25 inch optical disk drive bay. This bay is for an optical disk drive.
2.
Headphone port (lime). This port connects to a headphone or speaker.
3.
Microphone port (pink). This port connects to a microphone.
4.
3.5 inch drive bay. This 3.5 inch drive bay is for 3.5 inch hard disk drives / memory card
readers.
5.
Power button. Press this button to turn on your computer.
6.
USB 3.1 Gen 1 or Type-C port. This port connects to USB 3.1 Gen 1 or Type-C devices for
data transfer only.
7.
USB 3.1 Gen 1 port. This port connects to USB 3.1 Gen 1 devices such as a mouse, printer,
scanner, camera, PDA, and others.
8.
USB 2.0 ports. These Universal Serial Bus 2.0 (USB 2.0) ports connect to USB 2.0 devices such
as a mouse, printer, scanner, camera, PDA, and others.
ASUS Desktop PC
USB 3.1 Gen 1 or Type-C port
(for data transfer only)
USB 3.1 Gen 1 port
HDD only
O
O
O
O
O
O
SD/MMC/MS
Smart Card
17
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