User’s Manual

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
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.
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.
SD/MMC/MS
Smart Card
USB 3.1 Gen 1 or Type-C port
(for data transfer only)
USB 3.1 Gen 1 port
SATA port M.2 drive installed HDD only
SATA6G_1 X O
SATA6G_2 X O
SATA6G_3 O O
SATA6G_4 O O
SATA6G_5 O O
SATA6G_6 O O
ASUS Desktop PC 17
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