... .7mmExternal diameter: 4.8mmCompatible laptop models:HP/COMPAQ P/N: 325112-001, 324816-003, 324816-002, 324816-001, PA-1900-05C1, PPP012L, PPP014S ... -001, F4600A, F4813A, F5104A, HP-OL091B13, 310744-002, 239428-001, 239705-001,239428-002, 239705-001, 283884-001, 286755-001, 287515-001 ...