4440s 4441s 4540s 4740s 683494-001 HM76 AMD Radeon HD 7650M 2GB motherboard Fully tested & working perfect
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683494-001 Motherboard For HP 4440S intel HM76 non-integrated AMD Radeon HD 7650M 2GB 48.4SI01.011 100% fully tested _ - AliExpress Mobile
Specs HP ProBook 4740s i7-3612QM 43.9 cm (17.3") HD+ Intel® Core™ i7 8 GB DDR3-SDRAM 750 GB HDD AMD Radeon HD 7650M Windows 7 Professional Aluminium, Black Notebooks (B7C23PA)