Is there any possible way to have a DHCP reservation set for a device which I do NOT know the MAC address for? In other words, is there any thing that might just be unique for a certain model of hardware's DHCPREQUEST besides the MAC address which a DHCP server can identify it by? 

To explain my situation..

We plan on deploying a particular printer model to a large amount of our locations across the United States. I am attempting to figure out how the configuration of this printer can be automated.

This printer needs to join a wireless network which let's just say the end-user will not be able to join it to manually. Also let's say there is no preconfiguration possible.

What would be awesome is that they can simply hardwire the printer to a network, and the printer will be offerred a reserved IP address via DHCP. Once the printer is connected, a utility can be ran which finds the printer by it's known IP, and sends over it's configuration, connecting it to the wireless network.

The hardwire connection already has a DHCP scope setup, so the concern is that the printer could get any IP in that range, while the utility is only looking for a particular IP.

I know it sounds insane, but I'm curious if something like this is possible?