![HP Laptop Intel Core i3 1st Gen 350M (2.26GHz) 2GB Memory 320GB HDD Intel GMA HD 15.6" Windows 7 Professional / XP Professional downgrade ProBook 4520s (WH288UT#ABA) - Newegg.com HP Laptop Intel Core i3 1st Gen 350M (2.26GHz) 2GB Memory 320GB HDD Intel GMA HD 15.6" Windows 7 Professional / XP Professional downgrade ProBook 4520s (WH288UT#ABA) - Newegg.com](https://c1.neweggimages.com/ProductImageCompressAll1280/34-157-262-03.jpg)
HP Laptop Intel Core i3 1st Gen 350M (2.26GHz) 2GB Memory 320GB HDD Intel GMA HD 15.6" Windows 7 Professional / XP Professional downgrade ProBook 4520s (WH288UT#ABA) - Newegg.com
![Amazon.com: DY-tech 2nd Hard Drive HDD SSD Caddy Tray for HP ProBook 4520s 4525s 4720s 4730s GT31L : Electronics Amazon.com: DY-tech 2nd Hard Drive HDD SSD Caddy Tray for HP ProBook 4520s 4525s 4720s 4730s GT31L : Electronics](https://m.media-amazon.com/images/I/51300SOPcbL.jpg)
Amazon.com: DY-tech 2nd Hard Drive HDD SSD Caddy Tray for HP ProBook 4520s 4525s 4720s 4730s GT31L : Electronics
![HP Probook 4520s 15.6" Laptop Windows 10 Home Intel i3 2.53GHz 4GB Ram 320GB Hard Drive DVD WiFi Power Adapter HP Probook 4520s 15.6" Laptop Windows 10 Home Intel i3 2.53GHz 4GB Ram 320GB Hard Drive DVD WiFi Power Adapter](https://cdn11.bigcommerce.com/s-w5trgcbv/images/stencil/1280x1280/products/3838/38861/probook201__82886.1497554519.1280.1280__87697.1644957412.jpg?c=2)
HP Probook 4520s 15.6" Laptop Windows 10 Home Intel i3 2.53GHz 4GB Ram 320GB Hard Drive DVD WiFi Power Adapter
![Amazon.com: 1TB 2.5" Laptop Hard Drive for HP ProBook 4430s 4431s 4435s 4436s 4440s 4445s 4446s 4510s 4515s 4520s : Electronics Amazon.com: 1TB 2.5" Laptop Hard Drive for HP ProBook 4430s 4431s 4435s 4436s 4440s 4445s 4446s 4510s 4515s 4520s : Electronics](https://m.media-amazon.com/images/I/61crWRoG79L.jpg)
Amazon.com: 1TB 2.5" Laptop Hard Drive for HP ProBook 4430s 4431s 4435s 4436s 4440s 4445s 4446s 4510s 4515s 4520s : Electronics
![2nd SATA 12.7mm hard drive SSD HDD Caddy Adapter For HP ProBook 4520s 4525s 4720s 4730s GT31L|Laptop Bags & Cases| - AliExpress 2nd SATA 12.7mm hard drive SSD HDD Caddy Adapter For HP ProBook 4520s 4525s 4720s 4730s GT31L|Laptop Bags & Cases| - AliExpress](https://ae01.alicdn.com/kf/HTB1rDuJXvDH8KJjy1Xcq6ApdXXag/2nd-SATA-12-7mm-hard-drive-SSD-HDD-Caddy-Adapter-For-HP-ProBook-4520s-4525s-4720s.jpg_Q90.jpg_.webp)
2nd SATA 12.7mm hard drive SSD HDD Caddy Adapter For HP ProBook 4520s 4525s 4720s 4730s GT31L|Laptop Bags & Cases| - AliExpress
![Laptop HP ProBook 4520S 4GB Intel Core I3 HDD 640GB in Nairobi Central - Laptops & Computers, Tech Tonic Solutions | Jiji.co.ke Laptop HP ProBook 4520S 4GB Intel Core I3 HDD 640GB in Nairobi Central - Laptops & Computers, Tech Tonic Solutions | Jiji.co.ke](https://pictures-kenya.jijistatic.com/35011209_MTA4MC05NDktYzZjZjY0M2YwOA.jpg)