Amazon.com: Valley Of The Sun Laptop 1GB MXM Graphics Video Card M5800 Replacement, Compatible with for HP Elitebook 8540P 8540W Notebook PC, for AMD ATI FirePro M5800 DDR3 1 GB GPU Board
595764-001 Kaq00 La-4951p Qm57 8gb Ram Ver Motherboard System Board For Hp Elitebook 8540p 8540w Support Fx880m M5800 Fx1800m - Laptop Motherboard - AliExpress
Motherboard 595765-001 - 595765-001 for HP Elitebook 8540w
NOKOTION 595765-001 604538-001 Laptop Motherboard For HP, 56% OFF
HP EliteBook 8540p 8540w Motherboard KAQ00 LA-4951P 595765-001 – notebookparts.com
HP EliteBook 8540W LA-4951P 604538-001 595765-001 Motherboard – Empower Laptop