The GS1900-48HP is a 48-port managed Gigabit switch, of which 24 ports are PoE-capable.

• RTL8393M SoC
• SK hynix H5TQ1G63EFR (128MB DDR3 SDRAM)
• Macronix MX25L12805D (16MB flash)
• Sipex 3232EC RS232 level converter
• 6 x RTL8218B PHY
• 2 x RTL8231 GPIO extender

• PoE controller: STM32F100
• PSE: 6 x Broadcom BCM59111

The RS232 serial port is available on header J4, which matches a standard IDC10 pinout:

• J4.2: RX
• J4.3: TX
• J4.5: GND

A system reset switch (SW1) is reachable through a vent hole.

• Datasheet
• Product page