Specification Brand : DBTLAP BulletPoint1 : DBTLAP Laptop CPU fan Compatible for HP ProBook 640 G1 645 G1 650 G1 655 G1 cpu fan KSB0505HB-DA1B 6033B0034401 BulletPoint2 : 【Quality Item】 Each item will be Tested it one by one before shipping ensure 100% work. BulletPoint3 : 【Warranty】We will provide a 9-month warranty. BulletPoint4 : 【Warm Tips】All pictures are taken in kind, please check carefully with your original fan before buying. If you can not sure whether it fit Compatible For your need, please contact with us before buy it to avoid choose wrong. CompatibleDevices : Laptop CoolingMethod : forced air ExternallyAssignedProductIdentifier : 8606790167316 ExternallyAssignedProductIdentifier1 : 647297408395 ExternallyAssignedProductIdentifier2 : 0647297408395 ItemName : DBTLAP Laptop CPU Fan Compatible for HP ProBook 640 G1 645 G1 650 G1 655 G1 CPU Fan KSB0505HB-DA1B 6033B0034401 ItemPackageDimensions_Height : 2 inches ItemPackageDimensions_Length : 3 inches ItemPackageDimensions_Width : 3 inches ItemPackageQuantity : 1 ItemTypeKeyword : computer-internal-cpu-fans Manufacturer : DBTLAP Material : Plastic MaximumRotationalSpeed : 1500 rpm ModelNumber : HP ProBook 640 G1 NoiseLevel : 5 decibels PartNumber : HP ProBook 640 G1 PowerConnectorType : 4-Pin ProductDescription : DBTLAP Laptop CPU Fan Compatible for HP ProBook 640 G1 645 G1 650 G1 655 G1 CPU Fan KSB0505HB-DA1B 6033B0034401 ProductSiteLaunchDate : 2018-03-29T04:03:17.354Z UnitCount : 1 UnspscCode : 43201600 Voltage : 5 volts Wattage : 2.5 watts