i like it when pci/usb devices have vendor ids that make it immediately clear to me who made the device
off the top of my head i can only think of 8086 for intel and D161 for digium
i'm sure there's more
a few have somewhat less obvious ones, like AOpen has 0xA0A0
sifive apparently has 0xF15E
f5 networks has 0xF5F5
Fabric 7 = 0xFAB7
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