Genuine HP ProBook 4540S AC Charger Power Adapter | eBay
380467-005 18.5V 3.5A 65W AC Adapter Power Supply for HP Compaq 371790-001 380467-005 409843-001 ST-C-075-18500350CT Laptop Charger with Power Cable 4.8x1.7mm - Walmart.com
HP ProBook 4540s 4545s Laptop AC Adapter Charger Price in Pakistan – Laptop Spares
Charger for HP Probook 450 640 650 G1, 4530s 4540s 6460b 6570b Laptop Adapter US | eBay
HP ProBook 4540s original ac-adapter 65 Watt - sparepartworld.com