If you want a rugged power adapter, you want a Lind. This adapter was made to work with most major Toughbook models.
If you order this part, we may send you part # PA1555-771. This is functionally the same as PA1555-655, but supports a slightly wider input range (10-16 VDC as opposed to 12-16 VDC). The PA1555-771 is compatible with all the same Toughbook models.