RTLPlayground/doc/devices/HYWS-SGT0108S.md

Lianguo HYWS-SGT0108S

Following is documentation for unmanaged switch marked as HYWS-SGT0108S.

Original software is running UART on 9600 baud rate. Output is very minimal.

Using SPI clamp in-board is the only method for initial installation and update.

Stock flash chip is 512KB in size. Consider replacing for update through Web UI.

• Header for uart is clearly identified.
• The red LED act as a powered-on LED.
• There is no SYS LED.
• There is a footprint for a Reset button. Unpopulated. Unclear if routed back to RTL8373.

Label specifications

• Name: 2.5G Ethernet Switch 8+1
• Model: HYWS-SGT0108S
• Ports:
  • 8 × RJ45: 10/100/1000/2500 Mbps
  • 1 × SFP: 1000 / 2500 / 10000 Mbps

What works

• All eight 2.5GBASE-T RJ45 ports at 10/100/1000/2500 Mbps
• SFP port supporting 1G, 2.5G and 10G modules
• RJ45 LEDs (Blue+White)
• SFP Single LED (Blue)

Assembled unit

Top side

Front

Bottom

PCB overview

Board markings

• Top silkscreen: 2G5F_20G_V1.01 / 2023-09-28

Top side

Bottom

Original SPI Flash Chip

Power supply

Input power is delivered via barell plug, 12V 1A adapter was provided.