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65 lines
1.6 KiB
Markdown
65 lines
1.6 KiB
Markdown
# Lianguo HYWS-SGT0108S
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Following is documentation for unmanaged switch marked as `HYWS-SGT0108S`.
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Original software is running UART on 9600 baud rate. Output is very minimal.
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Using SPI clamp in-board is the only method for initial installation and update.
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Stock flash chip is 512KB in size. Consider replacing for update through Web UI.
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- Header for uart is clearly identified.
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- The red LED act as a powered-on LED.
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- There is no SYS LED.
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- There is a footprint for a Reset button. Unpopulated. Unclear if routed back to RTL8373.
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### Label specifications
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- **Name**: 2.5G Ethernet Switch 8+1
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- **Model**: HYWS-SGT0108S
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- **Ports**:
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- 8 × RJ45: 10/100/1000/2500 Mbps
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- 1 × SFP: 1000 / 2500 / 10000 Mbps
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### What works
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- All eight 2.5GBASE-T RJ45 ports at 10/100/1000/2500 Mbps
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- SFP port supporting 1G, 2.5G and 10G modules
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- RJ45 LEDs (Blue+White)
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- SFP Single LED (Blue)
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### Assembled unit
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Top side
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<img src="photos/HYWS-SGT0108S-unmanaged\Assembled-top.jpg" width="300" />
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Front
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<img src="photos/HYWS-SGT0108S-unmanaged\Assembled-front.jpg" width="300" />
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Bottom
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<img src="photos/HYWS-SGT0108S-unmanaged\Assembled-bottom.jpg" width="300" />
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### PCB overview
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**Board markings**
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- Top silkscreen: 2G5F_20G_V1.01 / 2023-09-28
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Top side
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<img src="photos/HYWS-SGT0108S-unmanaged\PCB-top.jpg" width="300" />
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Bottom
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<img src="photos/HYWS-SGT0108S-unmanaged\PCB-bot.jpg" width="300" />
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Original SPI Flash Chip
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<img src="photos/HYWS-SGT0108S-unmanaged\og_spi_flash.jpg" width="300" />
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## Power supply
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Input power is delivered via barell plug, `12V 1A` adapter was provided.
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