Table 11. WWAN module specifications (continued)
Description
Option one
●
HSPA+: (1, 2, 4, 5, 6, 8, 9, 19)
Wireless standards
●
NR FR1(Sub6) FDD/TDD
●
LTE FDD/TDD
●
WCDMA/HSPA+
●
GPS/GLONASS/Beidou/Galileo
Encryption
Not supported
Global Navigation Satellite System (GNSS)
Supports GPS, and GLONASS
NOTE:
For instructions on how to find your computer's IMEI (International Mobile Station Equipment Identity) number,
see the knowledge base article
.
Audio
The following table lists the audio specifications of your Precision 7770.
Table 12. Audio specifications
Description
Values
Audio controller
Realtek ALC711-VD
Stereo conversion
Supported
Internal audio interface
SoundWire
External audio interface
One universal audio jack
Number of speakers
Four (Two tweeter speakers and two woofer speakers)
Internal-speaker amplifier
Realtek ALC1319D
External volume controls
Keyboard shortcut controls
Speaker output:
Average speaker output
2 W + 2 W (tweeter), 2 W + 2 W (woofer)
Peak speaker output
2.5 W + 2.5 W (tweeter), 2.5 W + 2.5 W (woofer)
Subwoofer output
Not supported
Microphone
Dual digital-array microphones
Storage
This section lists the storage options on your Precision 7770.
●
M.2 2230 PCIe NVMe Gen4 x4, Class 35 SSD
●
M.2 2280 PCIe NVMe Gen4 x4, Class 40 SSD
●
M.2 2280 PCIe NVMe Gen3 x4, Class 40 SED (Self-Encrypting Drive)
Specifications of Precision 7770
17
