Thank you for an excellent place for information. I've been trying to identify a specific Samsung phone model that was connected to my laptop via USB. The VID is clear, Samsung, and some sources indicate the PID is an s3 or s5, but I read in another old post at Stephen J. Gowdy that the PID NUMBERS 6860 and 6866 are more generic for any Samsung phone.  Here is what I see under Devices in my Windows 10 registry:

 USB#VID_04e8&PID_6860#xxxxxxxx
USB#VID_04e8&PID_6860&MI_00#6&2DOBxxxx&0&0000
USB#VID_04e8&PID_6866&MI_00#6&310Axxxx&0&0000

Do the 6860 and 6866 PIDs actually indicate a specific phone model was connected to my pc? Thanks for any help you can give me.



It's not really useful in that way. The PID is used for the most part to associate a device with the appropriate driver software.

by way of example, The Nexus 4, 5, and 6 as well as the Nexus 6P all have an identical vendor and product ID of 0x18D1 and 0x4EE6.

As a side note, instead of digging in the registry, I'd suggest using a tool like USBDeView to view that information. (It GET's it from the same location, I expect). You might be able to get something more unique, For example my Nexus 6 is listed as a Nexus 6 specifically as the description.Thank you, BC_Programmer. I did try USBDeview and was hoping the reg info would be of some additional help. USBDeview SHOWS the same device various ways. One gives a model, SM-S120VL with a Device Type of Unknown. Another Description says ADB Device with the Device Type as Vendor Specific,  another Description calls it a USB Serial Device with a Description of Communication and, finally, the same device has a Description of USB Composite Device, with an Unknown Device Type.  I guess one phone can be all of those things at once, but it occurred to me that MAYBE this is something other than an S120VL. I know nothing about ADB, but is that a typical USBDeview output when a phone is plugged in to transfer photos? Thanks very much for your help.