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Cisco DPC3939

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Cisco DPC3939 Comcast 1.0
Availability: common

Manuf/OEM/ODM Pegatron

FCC approval date: 28 May 2013
Country of manuf.: China

Amazon image

B00I11LW0W (Flag of the United States.svg, On Amazon, On CCC)

Type: wireless router, cable modem, analog phone gateway


Power: 120 VAC ~ 60 Hz, 1.1 A
Connector type: C7P

CPU1: Intel Puma 6
FLA1: 128 MiB
134,217,728 B
1,048,576 Kib
131,072 KiB
1,024 Mib
0.125 GiB
(Micron MT29F1G08ABADAWP)
FLA2: 32 MiB
33,554,432 B
262,144 Kib
32,768 KiB
256 Mib
0.0313 GiB
(Micron N25Q256A13ESF404F)
RAM1: 512 MiB
536,870,912 B
4,194,304 Kib
524,288 KiB
4,096 Mib
0.5 GiB
(Micron MT41K128M16JT-125:K × 2)

Expansion IFs: USB 2.0
USB ports: 2

WI1 module: Pegatron UPWL60281HP
WI1 module IF: Mini PCIe
WI1 chip1: Atheros AR9381
WI1 802dot11 protocols: bgn
WI1 MIMO config: 3x3:3
WI1 antenna connector: U.FL
WI2 module: Pegatron UPWL6580
WI2 module IF: Mini PCIe
WI2 chip1: Atheros AR9580
WI2 802dot11 protocols: an
WI2 MIMO config: 3x3:3
WI2 antenna connector: U.FL

ETH chip1: Intel Puma 6
Switch: Marvell 88E6172
LAN speed: 10/100/1000
LAN ports: 4


Flags: DOCSIS 3.0, MoCA 2.0, DECT, ZigBee, battery backup

Default SSID: HOME-XXXX-2.4 (3 addl. devices), HOME-XXXX-5 (3 addl. devices)
Default IP address:
the IP is used by 19 additional devices
of which 3 are Cisco devices
Default login user: admin
Default login password: password
admin:password credentials used by 363 additional devices
of which 1 are Cisco devices

802dot11 OUI: none specified

Pegatron UPWL60281HPVUIUPWL60381HP
Pegatron UPWL6580VUIUPWL6580
For a list of all currently documented Atheros chipsets with specifications, see Atheros.
For a list of all currently documented Intel chipsets with specifications, see Intel.

DOCSIS 3.0 16x4

The FCC external photos indicate that this cable modem is used with Comcast's Xfinity service.

Cisco Wireless Residential Voice Gateway User Guide
Cisco DPC3939 Data Sheet

Per the FCC internal photos...

  • the SoC used is an Intel Puma 6
  • the GbE Switch is a Marvel 88E6172
  • the RAM appears to be 2x Micron MT29F1G08ABADAWP
  • the DECT module is a DSP Group DCX81AC0BFAE3ENC (DCX81)
  • the MOCA module is a ViXS XConnex XC1030
  • The battery shown in the FCC external photos is a Pegatron PB013 (Li-ion, 10.8V 2600mAh, 28Wh).

The FCC label shows the default SSID pattern is HOME-XXXX-2.4 and HOME-XXXX-5.