There is a mid bracket mount that apparently should be compatible with the MS355 series, however the screw holes are all the way in the back of the switch since there are mostly ventilation holes on the side of the switch.
If you actually click on the link of the MID mount bracket it then only lists MS 210/225 and MS 250 series:
So I would go with a hard no. the MS355 is quite a heavy switch and since you don't have any centrale screwholes you could not use that kind of a mount for a 2 post rack.
Maybe there are third party solutions that have a midmount shelf or support arms that can help you.