In the motherboard section, I find:
Motherboard Slots: 2xPCI Express x1, 1xPCI Express x8, 1xPCI Express x16
In the
HWiNFO window -> Motherboard -> SMBIOS DMI -> System Slots
entry, I find only the
entry for the 16x slot:
Slot Designation: J6B2
Slot Type: PCI Express
Slot Usage: In use
Slot Data Bus Width: 16x / x16
Slot Length: Long
Base Busevice:Function Number: 0:1:0
I'm afraid there's no other way here other than to rely on manufacturer's filled SMBIOS DMI data. Check the notebook manual whether it perhaps mentions some other slots present.