Dell Latitude E643 Owner's Manual page 78

Feature
Table 18. Audio
Feature
Type
Controller
Stereo conversion
Interface:
Internal
External
Speakers
Internal speaker amplifier
Volume controls
Table 19. Video
Feature
Type
Controller
Table 20. Communications
Features
Network adapter
Wireless
78
Specification
NOTE: The computer supports up to the maximum of 16 GB
memory; however, a 32-bit operating systems, such as the 32-
bit version of Microsoft® Windows® XP, can only use a
maximum of 4 GB of address space. Moreover, certain
components within the computer require address space in
the 4 GB range. Any address space reserved for these
components cannot be used by computer memory; therefore,
the amount of memory available to a 32-bit operating system
is less than 4 GB. Greater than 4 GB memory requires 64-bit
operating systems
Specification
four-channel high-definition audio
IDT92HD93
24-bit (analog-to-digital and digital-to-analog)
high-definition audio
microphone-in/stereo headphones/external speakers connector
two
1 W (RMS) per channel
keyboard function keys, program menus
Specification
integrated on system board
• Intel HD Graphics
• NVidia Discrete Graphics
Specification
10/100/1000 Mb/s Ethernet (RJ-45)
internal wireless local area network (WLAN) and wireless wide
area network (WWAN)