So good news there is a micro USB port and boot mode jumpers to be able to get the hub into SDP mode.

[4215213.643950] usb 3-4.4.2: new high-speed USB device number 8 using ehci-pci
[4215213.753446] usb 3-4.4.2: New USB device found, idVendor=15a2, idProduct=007d, bcdDevice= 0.01
[4215213.753448] usb 3-4.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[4215213.753450] usb 3-4.4.2: Product: SP Blank 6UL 
[4215213.753451] usb 3-4.4.2: Manufacturer: Freescale SemiConductor Inc 
[4215213.906618] hidraw: raw HID events driver (C) Jiri Kosina
[4215213.924124] usbcore: registered new interface driver usbhid
[4215213.924126] usbhid: USB HID core driver
[4215213.986475] hid-generic 0003:15A2:007D.0001: hiddev0,hidraw0: USB HID v1.10 Device [Freescale SemiConductor Inc  SP Blank 6UL ] on usb-0000:00:16.2-4.4.2/input0

For this you’ll need a couple of parts

J8 is the micro USB plug https://www.digikey.ca/en/products/detail/molex/1051330011/4356675

R703 and R704 are 10K 0402 resistors

With all of those populated the board will power from the micro USB slot. To put it into SDP mode short R709 while applying power.