Dell printer only working on 3Com managed switch

I have a Dell 2150 network printer with a static IP that for some reason is only working on a 3Com Superstack II managed switch
   The Dell printer has been plugged into a 3Com managed switch that I found hidden in an overhead ceiling panel which connects via a CAT5 run to another 3Com managed switch going into Windows 2012 server standard R2.
 The 3Com switch on the printer side, needs to be replaced per my supervisor. I purchased a nonmanaged 24 port gigabit switch and put it in place. I then moved all inputs over to the new switch with each input in the same input jack as it was  in the 3Com switch.  As soon as I did that, none of the client PCs on the network could access the printer from that point on. I put the 3Com switch back in place coming off of the new 24 port gigabit switch uplink port, and the printer  was instantly available to all the client PC's again.   I removed the 3Com switch and plug the printer back into the new gigabit switch and lost the printer again.   Hoping for a fairly easy result of this experts. Thanks.
Houston BlancettAsked:
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Scott CSenior EngineerCommented:
Print out the configuration of the printer and see if there is anything there that is hard coding it to that old switch.
Gerwin Jansen, EE MVETopic Advisor Commented:
What are the ip adresses of:
- the server
- both switches
- the printer

You can list ip addresses like this: 192.168.2.x 192.168.2.y 192.168.1.z (or alike).

I'm suspecting that the switch that is connected to the server is creating / routing a vlan to the switch closest to the printer and that your replacement switch (which is unmanaged - not the same as your current managed switch) is not capable of routing the vlan that the printer is configured to use.

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Houston BlancettAuthor Commented:
I will have access to the network Monday morning and I will get answers to your responses and post them.
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Gerwin Jansen, EE MVETopic Advisor Commented:
That's OK, pls add switch types, port numbers used for both existing and replacement switch(es). Thx.
Houston BlancettAuthor Commented:
Attached is the print out from the Dell printer.
Houston BlancettAuthor Commented:
The switches in question were creating a VLAN for the printer. Thanks.
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