Table 11. WWAN module specifications (continued)
Description Option one Option two
Operating frequency bands
● LTE(B1, B2, B3, B4, B5, B7, B8, B12,
B13, B14, B17, B18, B19, B20, B25, B26,
B28, B29, B30, B32, B34, B38, B39,
B40, B41(HPUE), B42, B43, B46(receiver
only), B48, B66, B71
● WCDMA/HSPA+(1, 2, 4, 5, 8)
● NR(n1, n2, n3, n5, n7, n8, n20, n25,
n28, n30, n38, n40, n41, n48, n66, n71,
n77, n78, n79)
● LTE (B1, B2, B3, B4, B5, B7, B8, B12,
B13, B14, B17, B18, B19, B20, B25,
B26, B28, B29, B30, B32, B34, B38,
B39, B40, B41, B42, B43, B46, B48,
B66, B71*)
● WCDMA/HSPA+ (1, 2, 4, 5, 8)
Power supply
DC 3.135 V to 4.40 V, typical 3.30 V DC 3.135 V to 4.4 V, Typical 3.3 V
SIM card
Supported through external SIM slot Supported through external SIM slot
eSIM with dual SIM (DSSA)
Supported (the availability of eSIM
functionality embedded on the module is
dependent on the region and specific carrier
requirements)
Supported
Antenna diversity
Supported Supported
Radio On/Off
Supported Supported
Wake on wireless
Supported Supported
Temperature
● Normal operating temperature: -10°C to
+ 55°C
● Extended Operating temperature: -20°C
to +65°C
● Normal operating temperature: -10°C
to + 55°C
● Extended Operating temperature:
-30°C to +75°C
● Storage temperature: -40°C to
+85°C
Antenna connector
● WWAN Main Antenna x 4
● Supports 4x4 MIMO
● WWAN Main Antenna x 4
● Supports 4x4 MIMO
NOTE: For instructions on how to find your computer's IMEI (International Mobile Station Equipment Identity) number,
search in the Knowledge Base Resource at www.dell.com/support.
Audio
The following table lists the audio specifications of your Precision 3581.
Table 12. Audio specifications
Description Values
Audio controller
Realtek Waves, MaxxAudio 12.0
Stereo conversion
Supported
Internal audio interface
High definition audio interface
External audio interface
Universal Audio Jack/HDMI 2.0 port
Number of speakers
2
Internal-speaker amplifier
Not supported
Specifications of Precision 3581 21
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