On the man page we read,

       -d [vendor]:[product]
              Show only devices with the specified vendor and product ID.  Both ID's are given in hexadecimal.

Well, I thought, "why must I purchase (if even still on the market) and
plug in a device, just to get this info? Why not allow:

$ lsusb --even-if-not-plugged-in -d 058f:6362
Bus --- Device ---: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer

Else one needs to write a perl script just to dig that out of
the usb.ids file.

So please add a -e | --even-if-not-plugged-in. Thanks.