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MAR1020-99MMMMTTTTTTTTTTTTTTUMMHPHH vs MAR1020-99MMMMMM9999999SGGHPHH05
- Quick Overview of Core Differences
| Comparison Item | MAR1020-99MMMMTTTTTTTTTTTTTTUMMHPHH | MAR1020-99MMMMMM9999999SGGHPHH05 | Impact Description |
| Port Configuration | Hybrid ports: Combination of MM multimode fiber and TT twisted pair | Pure fiber ports: 6 groups of MM multimode fiber, no twisted pair port | Determines connection medium. The first model fits optoelectronic hybrid networks, while the second suits pure fiber networks |
| Temperature Range | Grade U: -40℃ ~ +85℃ (Wide temperature type) | Grade S: 0℃ ~ +60℃ (Standard temperature type) | The former applies to outdoor and extreme industrial environments; the latter is for indoor and standard machine rooms |
| Conformal Coating | UMMH: With anti-corrosion and moisture-proof conformal coating | SGGH: Without conformal coating | The former adapts to high humidity, salt fog and dusty environments; the latter fits clean surroundings |
| Software Version | Basic version (no suffix version number) | 05: 5th edition software | The latter contains more function updates and security patches |
| Power Redundancy | Redundant power supply (MM stands for redundancy in UMMH) | Single power supply (GG stands for single power in SGGH) | Redundant power enhances system reliability for mission-critical applications |
- In-depth Segment-by-segment Model Analysis
Hirschmann MACH1000 series coding rule: MAR1020-99[Port Configuration][Temperature/Coating/Power][Software Version]
2.1 Basic Identical Model Segment
– MAR1020: 24-port Fast Ethernet rugged switch of Hirschmann MACH1000 series, 19-inch rack-mounted, fanless design
– 99: Port configuration prefix, representing 24 100Mbps ports
2.2 Port Configuration Segment (Key Difference 1)
| Code Segment | Definition | Specific Configuration |
| MMMMTTTTTTTTTTTTTTT | Hybrid ports: 4 multimode fiber ports + 16 twisted pair ports | 4×FE MM-SC multimode fiber ports + 16×FE TX RJ45 twisted pair ports |
| MMMMMM9999999 | Pure fiber ports: 6 multimode fiber ports, no twisted pair port | 6×FE MM-SC multimode fiber ports with no twisted pair equipped; 999999 means vacant twisted pair ports |
2.3 Temperature, Coating & Power Segment (Key Difference 2-4)
| Code Segment | Temperature Range | Conformal Coating | Power Type |
| UMMH | U: -40℃ ~ +85℃ wide temperature | M: Equipped with conformal coating | MH: Redundant power supply (100-240VAC/DC) |
| SGGH | S: 0℃ ~ +60℃ standard temperature | G: Without conformal coating | GH: Single power supply (100-240VAC/DC) |
2.4 Software Version Segment (Key Difference 5)
| Code Segment | Software Version | Function Description |
| PHH | Basic version (no version number) | Classic L2P professional Layer 2 software |
| PHH05 | 05: 5th edition | Updated Classic L2P professional Layer 2 software |
- Full Parameter Comparison Table| Parameter Category | MAR1020-99MMMMTTTTTTTTTTTTTTUMMHPHH | MAR1020-99MMMMMM9999999SGGHPHH05 |
| —- | —- | —- | —- |
| Product Type | 24-port 100Mbps rugged managed switch | 24-port 100Mbps rugged managed switch |
| Total Ports | 24 (4 multi-mode fiber + 16 twisted pair) | 24 (24 multi-mode fiber, no twisted pair) |
| Port Type | FE MM-SC multi-mode fiber + FE TX RJ45 | 24×FE MM-SC multi-mode fiber |
| Operating Temperature | -40℃ ~ +85℃ wide temperature | 0℃ ~ +60℃ standard temperature |
| Conformal Coating | Available, anti-corrosion & moisture-proof | Unavailable |
| Power Configuration | Redundant power (100-240VAC/DC) | Single power (100-240VAC/DC) |
| Software Version | Classic L2P Basic Version | Classic L2P Version 5 |
| Applicable Environment | Outdoor, extreme industrial sites, high humidity, salt fog and dusty areas | Indoor, standard computer rooms, clean industrial environments |
| Typical Application | Wind power, photovoltaic, substation, rail transit, offshore platforms | Factory automation, building automation, data centers |
| Reliability Level | High (Redundant power + wide temperature + coating) | Standard (Single power + standard temperature + no coating) |
- Selection Suggestions & Summary
- Priority of environmental adaptability
Outdoor & extreme temperature scenarios: Choose Grade U wide-temperature model with conformal coating
Indoor standard scenarios: Select Grade S standard-temperature model for lower cost
- Network topology matching
Opto-electronic hybrid network: Adopt hybrid MM&TT port model for flexible device connection
Pure fiber network: Choose full MM fiber port model to extend transmission distance and enhance anti-interference performance
- Reliability requirement
Mission-critical systems: Deploy redundant power model to avoid single-point failure
General applications: Use single power model to cut procurement cost
- Software function demand
Latest features and security patches required: Select version-numbered models such as Version 05
Basic functions sufficient: Basic version is acceptable
Core Conclusion
The essential differences lie in port layout, temperature adaptability, protection grade, power redundancy and software version. These factors determine applicable scenarios and reliability grades. Select the proper model according to actual operating environment, network topology and reliability requirements.
