This read-only value records the slot number associated with the most recent CRC error observed on this card's Peabody bus LSB signal. An admin uses this alongside the CRC error counter to identify which neighboring slot or bus segment was implicated in the last detected error, narrowing down a backplane fault to a specific card interaction. For example, if teraTDMPeabodyLSBCrcLastSlot reads 5 whenever the error counter increments, a technician would inspect the card and connector in slot 5 as the likely source.