User’s Manual
Table Of Contents
- Notices
- Safety information
- Conventions used in this guide
- Where to find more information
- Package contents
- Chapter 1: Getting started
- Chapter 2: Connecting devices to your computer
- Chapter 3: Using your computer
- Chapter 4: Connecting to the Internet
- Chapter 5: Using ASUS Business Manager
- Chapter 6: Troubleshooting
- Appendix: Windows® 10 User Manual
- ASUS contact information
SD/MMC/MS
Smart Card
D640SA/ M640SA/ W640SA Front Panel
1. Power button. Press this button to turn on your computer.
2. Optical disk drive eject button. Press this button to eject the optical disk drive tray.
3. 5.25 inch optical disk drive bay. The 5.25 inch optical disk drive bay is for 5.25 inch DVD-
ROM / CD-RW / DVD-RW devices.
4. HDD LED. This LED lights up when the hard disk drive operates.
5. 3.5 inch drive bay. This 3.5 inch drive bay is for 3.5 inch hard disk drives / memory card
readers.
6. USB 3.1 Gen 1 ports. These ports connect to USB 3.1 Gen 1 devices such as a mouse, printer,
scanner, camera, PDA, and others.
7. 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.
8. Headphone port (lime). This port connects to a headphone or speaker.
9. Microphone port (pink). This port connects to a microphone.
USB 3.1 Gen 1 or Type-C port
(for data transfer only)
USB 3.1 Gen 1 port
ASUS Desktop PC 21
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