Model | SoC | PoE | Comment |
---|---|---|---|
SG220-26 | RTL8382M | ||
SG220-26P | RTL8382M | ✓ | |
SG220-50 | RTL8393M | ||
SG220-50P | RTL8393M | ✓ | |
SF220-24 | RTL8332M | 10/100 ports only | |
SF220-24P | RTL8332M | ✓ | 10/100 ports only |
SF220-48 | RTL8353M | 10/100 ports only | |
SF220-48P | RTL8353M | ✓ | 10/100 ports only |
All models share the same firmware image. The image format is the same as the bix
format, used by the Zyxel GS1900 series switches.
The SG220-26 and SG220-26P appear to use the same board, although some components related to the PoE management are missing on the SG220-26's main board
All LEDs are controlled by the port LED peripheral:
The green and amber device status LEDs are wired in anti-parallel, and only one can be enabled at a time.
Present only on the SG220-26P.
The JTAG header uses the MIPS eJTAG pin-out, with pin 12 (key) bound to ground.
+-J4-----+ TRST# | 1 2 | GND TDI | 3 4 | GND TDO | 5 6 | GND TMS | 7 8 | GND TCK | 9 10 | GND SRST# | 11 12 | GND N/C | 13 14 | VCC +--------+