Laptop keyboard for HP ProBook 4540s 4545s black with gray frame|Replacement Keyboards| - AliExpress
Amazon.co.jp: hp Probook 4540s Core i5 2.5GHz/ DDR3 4GB/ 320GB/ Windows 8 Pro 64bit/ 15.6 inch HD 1366x768/ Intel HD Graphics 4000/ Wireless LAN/ DVD Super Multi/ HP Genuine Recovery Media Included [