No, the FGSW-2620 does not support Jumbo Frame.
The GSW-1600HP is designed with over power loading protection functions. Please make sure that your total PoE output is within 220Watts. If your PD device is the IEEE 802.3at (standard) and it needs 24Watts for powering up, the GSW-1600HP only can power up to 9 of your PD devices.
No, you can’t. Please be noticed that WGSW-2620HP supports 180 Watts + 180 Watts power budget (Total 360 Watts). The meaning is 180 Watts power budget offering to first 12 ports, another 180 Watts power budget is offering to last 12 ports.

For your issue, we suggest picking up 7 PoE devices and connecting to first 12 ports, another 5 POE devices connect to last 12 ports.
System will stops power offering to the overload port automatically.
yes, due to per port of GSW-1601v3 / GSW-2401v3 support Auto negotiation ability and it can run at 10/100/1000Mbps half / full duplex mode.
Yes. The GSW-1601v3 / GSW-2401v3 support 9K Jumbo frame size.
Please press Reset button at front panel for 5 seconds then the FGSW-2620VM will reset to factory default mode (username and password: admin, default IP address: 192.168.0.100)
Solution:
a.One of the key advantages of SGSW-24240 is that each of the SFP slot supports Dual-Speed, 1000Base-SX / LX or 100Base-FX; that means, the administrator now can flexibly choose the suitable SFP transceiver according to not only the transmission distance but also the transmission speed required.
b.For 1000Base-SX/LX and 1000Base-BX WDM SFP fiber-optical modules. The following PLANET Gigabit SFP transceivers are available for SGSW-24240:
|
MGB-GT |
SFP-Port 1000Base-T Module |
|
MGB-SX |
SFP-Port 1000Base-LX mini-GBIC module |
|
MGB-LX |
SFP-Port 1000Base-LX mini-GBIC module |
|
MGB-L30 |
SFP-Port 1000Base-LX mini-GBIC module-30km |
|
MGB-L50 |
SFP-Port 1000Base-LX mini-GBIC module-50km |
|
MGB-L70 |
SFP-Port 1000Base-LX mini-GBIC module-70km |
|
MGB-L120 |
SFP-Port 1000Base-LX mini-GBIC module-120km |
|
MGB-LA10 |
SFP-Port 1000Base-LX (WDM,TX:1310nm) mini-GBIC module-10km |
|
MGB-LB10 |
SFP-Port 1000Base-LX (WDM,TX:1550nm) mini-GBIC module-10km |
|
MGB-LA20 |
SFP-Port 1000Base-LX (WDM,TX:1310nm) mini-GBIC module-20km |
|
MGB-LB20 |
SFP-Port 1000Base-LX (WDM,TX:1550nm) mini-GBIC module-20km |
|
MGB-LA40 |
SFP-Port 1000Base-LX (WDM,TX:1310nm) mini-GBIC module-40km |
|
MGB-LB40 |
SFP-Port 1000Base-LX (WDM,TX:1550nm) mini-GBIC module-40km |
c.For 100Base-FX and 100Base-BX WDM SFP fiber-optical modules. The following PLANET 100Mbps SFP transceivers are available for SGSW-24240:
|
MFB-FX |
SFP-Port 100Base-FX Transceiver (1310nm)-2km |
|
MFB-F20 |
SFP-Port 100Base-FX Transceiver (1310nm)-20km |
|
MFB-F40 |
SFP-Port 100Base-FX Transceiver (1310nm)-40km |
|
MFB-F60 |
SFP-Port 100Base-FX Transceiver (1310nm)-60KM |
|
MFB-FA20 |
SFP-Port 100Base-BX Transceiver (WDM,TX:1310nm)-20km |
|
MFB-FB20 |
SFP-Port 100Base-BX Transceiver (WDM,TX:1550nm)-20km |