The GS1920 series is a line of managed gigabit ethernet switches. Two revisions exist, but both are built with Realtek hardware.
Switch name | RJ45 ports | Combo SFP ports | Dedicated SFP ports | PoE ports | SoC |
---|---|---|---|---|---|
GS1920-24 | 28 | 4 | - | - | RTL8392M |
GS1920-24HP | 28 | 4 | - | 24 | RTL8392M |
GS1920-48 | 48 | 4 | 2 | - | RTL8393M |
GS1920-48HP | 48 | 4 | 2 | 48 | RTL8393M |
GS1920-8HPv2 | 10 | 2 | - | 8 | RTL8391M |
GS1920-24v2 | 28 | 4 | - | - | RTL8391M |
GS1920-24HPv2 | 28 | 4 | - | 24 | RTL8391M |
GS1920-48v2 | 48 | 4 | 2 | - | RTL8393M |
GS1920-48HPv2 | 48 | 4 | 2 | 48 | RTL8393M |
The serial port header J2 uses the standard DCE pinout, with TX/RX on pins 2 and 3, and ground on pin 5. Port settings are 9600 baud, 8n1, with ±5.6V logic levels.
The PoE management MCU and the ADT7468 fan controller are on a shared I2C bus. The PoE MCU is at address 0x20, while the fan controller is at (fixed) address 0x2E.