... diameter:1.7mmExternal diameter: 4.8mm Compatible laptop models: HP/COMPAQ P/N: 325112-001, 324816-003, 324816- ... 287515-001, ACCOM-C16, 432309-001Compatible Laptop Models: Compaq Presario 2100 Series :2100AP, 2100CA, 2100LA, 2100US, 2101AP, 2101US, 2102AP, ... ZE5170, ZE5185, ZE5200, ZE5279, ZE5300, ZE5395US, ZE5478CL, ZE5490US, HP Pavilion ZE5000 ZE5100 ZE5200 ZE5300 ZE5400 ZE5500 ZE5600 ZE5700 Series ...