What OID are you using that shows off the Module Name when polled? I would rather select by that...
I get the ROW ID that shows. So I break them down - of course the Row ID Ends with these #'s (the preceding 101, 102 at the beginning of the ID is the Fex #.. fyi)
Row ID 22, 23,24 - Modules and their Sub/Daughter Cards - or just 1030000022 for the Fex 103
Row ID 470/471/472 = power supplies - 1030000470 / 1030000471 for Fex 103 Power Supplies
Row ID 534,through 539 (at least) are fans - Fex / 2248 will have 534 through 536, 2 PS fans, 1 chassis fan.