Supporting all PCIe speeds from 2.5 GT/s through 8 GT/s and link widths from x1 through x16, Model U4301B comes standard with analysis tools to validate PCIe LTSSM processes, as well as NVM Express and AHCI transactional protocol operations. Added interposers support storage devices that use SFF-8639 and M.2 connectors. Using Equalization Snoop Probe technology and fully automated tuning procedures, probing solutions capture data in marginal systems.