No the options would not work and I doubt that there is any solution except a PCI(-E) card.

Those front panel thing (what you called internal hub) does not connect the FireWire port to a USB header, but a FireWire header, which would only exists if the board has a FireWire controller built in (and if that's the case, you'll likely have at least one FireWire port on the back panel and a front panel module comes with the board). For example, https://www.asus.com/Motherboards/P5AD2_Premium/specifications/

Neither will there be such thing as "FireWire to SATA" (at least not in the sense of what you need) since SATA is not a general-purpose connector anyway.

The external hub pretty obviously takes a FireWire and a USB input (the Port 0s) RESPECTIVELY. And I doubt that there is such thing as "FireWire to USB" anyway, since the protocol is totally different and incompatible. I saw some people told that they can connected some of their FireWire devices to USB ports with an adapter, but I think that's only possible if the device itself explicitly support both protocols and is able to detect what's the type of the host and switch dynamically.

EDIT: I don't think your graphic card can block you from using the PCI-E x1 slot for a FireWire controller card? Since apparently the gap between them looks wide enough to accommodate thick card that occupies two slots? Or do you have one that occupies three slots?

No the options would not work and I doubt that there is any solution except a PCI(-E) card.

Those front panel thing (what you called internal hub) does not connect the FireWire port to a USB header, but a FireWire header, which would only exists if the board has a FireWire controller built in (and if that's the case, you'll likely have at least one FireWire port on the back panel and a front panel module comes with the board). For example, https://www.asus.com/Motherboards/P5AD2_Premium/specifications/

Neither will there be such thing as "FireWire to SATA" (at least not in the sense of what you need) since SATA is not a general-purpose connector anyway.

The external hub pretty obviously takes a FireWire and a USB input (the Port 0s) RESPECTIVELY. And I doubt that there is such thing as "FireWire to USB" anyway, since the protocol is totally different and incompatible. I saw some people told that they can connected some of their FireWire devices to USB ports with an adapter, but I think that's only possible if the device itself explicitly support both protocols and is able to detect what's the type of the host and switch dynamically.

EDIT: I don't think your graphic card can block you from using the PCI-E x1 slot for a FireWire controller card? Since apparently the gap between them looks wide enough to accommodate thick card that occupies two slots? Or do you have one that occupies three slots:

Are there even such cards for mATX?

No the options would not work and I doubt that there is any solution except a PCI(-E) card.

Those front panel thing (what you called internal hub) does not connect the FireWire port to a USB header, but a FireWire header, which would only exists if the board has a FireWire controller built in (and if that's the case, you'll likely have at least one FireWire port on the back panel and a front panel module comes with the board). For example, https://www.asus.com/Motherboards/P5AD2_Premium/specifications/

Neither will there be such thing as "FireWire to SATA" (at least not in the sense of what you need) since SATA is not a general-purpose connector anyway.

The external hub pretty obviously takes the FireWire and USB inputs (the Port 0s) RESPECTIVELY. And I doubt that there is such thing as "FireWire to USB" anyway, since the protocol is totally different and incompatible. I saw some people told that they can connected some of their FireWire devices to USB ports with an adapter, but I think that's only possible if the device itself explicitly support both protocols and is able to detect what's the type of the host and switch dynamically.

No the options would not work and I doubt that there is any solution except a PCI(-E) card.

Those front panel thing (what you called internal hub) does not connect the FireWire port to a USB header, but a FireWire header, which would only exists if the board has a FireWire controller built in (and if that's the case, you'll likely have at least one FireWire port on the back panel and a front panel module comes with the board). For example, https://www.asus.com/Motherboards/P5AD2_Premium/specifications/

Neither will there be such thing as "FireWire to SATA" (at least not in the sense of what you need) since SATA is not a general-purpose connector anyway.

The external hub pretty obviously takes a FireWire and a USB input (the Port 0s) RESPECTIVELY. And I doubt that there is such thing as "FireWire to USB" anyway, since the protocol is totally different and incompatible. I saw some people told that they can connected some of their FireWire devices to USB ports with an adapter, but I think that's only possible if the device itself explicitly support both protocols and is able to detect what's the type of the host and switch dynamically.

EDIT: I don't think your graphic card can block you from using the PCI-E x1 slot for a FireWire controller card? Since apparently the gap between them looks wide enough to accommodate thick card that occupies two slots? Or do you have one that occupies three slots?