The reason why different brands include different components in their NMEA 2000 Starter Kits comes down to several key factors :

1. Brand-Specific Design Standards

While NMEA 2000 is a standardized protocol, each manufacturer may use proprietary connectors or cable formats.

For example, Raymarine uses SeaTalkNG, which is NMEA 2000 compatible but has a different connector design and color coding.

As a result, kits are tailored to fit their own hardware ecosystem.

2. Different Target Users

Some kits are designed for entry-level users and include only the most essential components (e.g., 2 T-connectors, a power cable, and terminators).

Others are aimed at users planning to expand their networks and come with additional T-connectors, longer backbone cables, and multiple drop cables.

3. Regional or Market Preferences

Starter kits may vary slightly depending on the market or region, as installation preferences, boat types, and common device combinations differ across countries.
 

 
An NMEA 2000 Starter Kit typically includes the basic components required to build a small NMEA 2000 network. While the exact contents vary by manufacturer

NMEA 2000 Starter Kit B Including Below Items : 
 

T-Splitter

Drop Cable 2M

4 Ways T-Splitter 

Terminator Male Female

Power Cable with Fuse 1M