No, the FGSW-2620 does not support Jumbo Frame.
The FGSW-2620 Gigabit Switch provided high performance 24-Port 10/100Mbps + 2 10/100/1000Mbps Ethernet port. The extra two Gigabit ports make FGSW-2620 to be a Gigabit back bone Switch in Gigabit Network. For example, you can attach PC workstation groups to 10/100Mbps port and then attach Storage Server (such as NAS Server) to one of Gigabit port, finally use another Gigabit port connect to Gigabit back bone Network.
Power on / off button enhanced on FSD-503v3.
Power on / off button enhanced on FSD-803v3.
1.
V2: No power on / off button at rear panel.
V3: One power on / off button at rear panel.
2.Check the serial number from FCC label that located on bottom of FSD-503.
1.
V2: No power on / off button at rear panel.
V3: One power on / off button at rear panel.
2. Check the serial number from FCC label that located on bottom of FSD-803.