... 7.4x5.0mm for HP laptop adapter, for compaq notebook adapter Specifications laptop ac adapter for hp 19v 4.74a ... 0mm pin inside4.Warranty:1year 5.Compatible Part No.: 239428-002, 239428-001,239705-001, 287515-001,308745-001, ... 309241-001,310925-001, 310744-002,PPP012H, PPP012LPA-1900-05C1, PPP014L,324816-001, 324816-002,324816-003, 325112-021,325112- ... 19v 4.74a 7.4x5.0mm, for compaq notebook adapter