Arris CM820A

From WikiDevi.Wi-Cat.RU
Jump to navigation Jump to search

Arris CM820 A (B/C/S)
Availability: Comcast

(Est.) release date: 30 June 2012
UPC: 726947110717 (UPC DB, On eBay)

Amazon image

B008GG78FU (Flag of the United States.svg, On Amazon, On CCC)

Type: cable modem

Power: 115-240 VAC ~ 50/60 Hz, 0.3 A
Connector type: C7P

CPU1: Intel Puma DNCE2500
FLA1: 16 MiB16,777,216 B <br />131,072 Kib <br />16,384 KiB <br />128 Mib <br />0.0156 GiB <br /> (Brand? Model?)
RAM1: 128 MiB134,217,728 B <br />1,048,576 Kib <br />131,072 KiB <br />1,024 Mib <br />0.125 GiB <br /> (Brand? Model?)

Expansion IFs: none specified

ETH chip1: Intel Puma DNCE2500
ETH chip2: Marvell Model?
LAN speed: 1G
LAN ports: 1

Flags: DOCSIS 3.0

Ethernet OUI: 00:1D:D2, E8:3E:FC (2 E, -)

For a list of all currently documented Intel Puma SoC's with specifications, see Intel Puma.

Ultra-High Speed Cable Modem

Support page
  • DOCSIS 3.0 8x4 (8-downstream, 4-upstream)


  • CM820A - DOCSIS 3.0 (Comcast)
  • CM820B / CM820S - EuroDOCSIS 3.0 / DOCSIS 3.0
  • CM820C - DOCSIS 3.0 (Japanese)

There would appear to be multiple revisions of this device.

Some seem have a polarized power connector (C7P),
others have a non-polarized Fig-8 connector (C7).

Likely compatible services


CPU: Intel Puma DNCE2500 (DNCE25xx)