You can download driver for HP psc 950 all-in-one Startup Delay Patch 4.3 here, but DriversKit`s Team strongly recommend you to use Driver Updater Pro for finding the latest version of this driver. You can download Driver Updater Pro here.
Also you can:
Search HP psc 950 all-in-one Startup Delay Patch 4.3 driver at Google
Search HP psc 950 all-in-one Startup Delay Patch 4.3 driver at Yahoo
Search HP psc 950 all-in-one Startup Delay Patch 4.3 driver at MSN
Search HP psc 950 all-in-one Startup Delay Patch 4.3 driver at Teoma
Search HP psc 950 all-in-one Startup Delay Patch 4.3 driver at AltaVista