No, the PowerConnect 35xx/35xxP will only stack with another PowerConnect 35xx/35xxP.  I believe the same goes for the 55xx. -B
Hi! everyone, I would be most grateful if anyone can let me know if it is possible to stack a PowerConnect 5524 with a 3548, (the 3548 do not have a HDMI port, only gigabit ports for stacking) if yes please how do i do this, I already tried using a HDMI to RJ45 converter to connect both switches, but each time I power up the 5524, the other (g4) on the 3548 goes down and there is no connection between the two switches. Thanking y'all in advance.
Stacking different models of PowerConnect ?