Questions about Netgear GS308-300PES

Is this really the 1Gbit/s version? The name says 100 and Netgear sells a 1Gbit/s version and a 100Mbit/s version.

Good day. I need a switch with as little power supply as possible. However, my current Netgear switch still has an "ancient 500g heavy" power supply unit the size of a tennis ball. Since a lot has happened in technology in the meantime, I hope that the power supply unit of this switch is not much bigger than a standard mobile phone/tablet power supply unit. Can anyone give me any information on this? Thank you very much!

Does this switch have a fan? I want to buy a quiet switch with low power consumption.

Since all 8 ports are occupied, I thought I would get the same device again and connect it in series. is this possible? So from the modem->1st switch->2nd switch

Is this switch swisscom compatible