ALIENCULTIST.COM
HARDWARE ARCHIVES // COMPONENT RECORD

[ MODEL-SPECIFIC NETWORK HARDWARE ]

Motorola MB7621 DOCSIS 3.0 Cable Modem

24×8 DOCSIS 3.0 stand-alone cable modem with one Gigabit Ethernet handoff. It has no wireless LAN or telephone interface.

Original local illustration of the Motorola MB7621 24 by 8 cable modem
UNIQUE LOCAL SVG // REFERENCE SCHEMATIC, NOT TO SCALE

EXACT MODEL / SKU: Motorola MB7621, North American MB7621-100NAS family. Match label and hardware revision to provider certification.

Exact specifications and compatibility

Model / SKUMotorola MB7621; North American retail model MB7621-100NAS.
Modem standardDOCSIS 3.0, 24 downstream × 8 upstream bonded channels; backward interoperability depends on the cable system.
InterfacesCoaxial F-type cable input; 1 × Gigabit RJ-45 Ethernet output to one router or host.
Downstream / upstreamManufacturer specifies plans up to 1Gb/s downstream (24×8 class; marketed download capability may be stated as approximately 1,029Mb/s). Eight bonded upstream channels are supported; actual upload rate is limited and provisioned by the operator.
Telephone serviceNo voice/eMTA jack; not compatible with bundled telephone service requiring a voice modem.
Provider compatibilityCheck Motorola's provider list and the cable operator's approved-device list for MB7621-100NAS, requested speed tier and region before buying; provider registration is required.
Firmware / host compatibilityISP controls DOCSIS firmware provisioning and updates. Standard Ethernet requires no operating-system-specific modem driver; activation still requires provider support.
Power and safety12V DC, 1.5A external adapter. Use the model's supplied UL-listed adapter, keep the modem dry and ventilated indoors, and disconnect power before cleaning or moving.

Model-specific notes

The Gigabit port, provider package, signal quality and upstream channel plan set the usable rate. No Wi-Fi router, telephony port, or independent upload guarantee is included.

Manufacturer specifications and manual

  1. Motorola MB7621 manufacturer data sheetModel-specific data-sheet reference for DOCSIS channels, Ethernet interface, rated speed and power. This legacy support host may restrict automated fetches.
  2. Motorola MB7621 official set-up and installation guideManufacturer support instructions for the exact model, setup and web interface.