How can I tell these two trays apart? Is there an R# somewhere?
I have already sent one back because it was for the wrong printers. I assumed it was an A unit.
I have the 4250N. I know it needs the Q2444B
A unit is for the 4200 series and not compatible with the 4250 series while the B model shouldf fit both 4200 and 4250 printer series being backward compatible.
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