Description This is a NEW Cisco PXM45-B-TO-C-UPG= 2 PXM45/B, 2 PXM-UI-S3 Swapped for 2 PXM45/C, 2 PXM-U MGX 8800 Processor Switching Modules PXM45-B-TO-C-UPG_ PXM45BTOCUPG=,PXM45-B-TO-C-UPG=