![OFFTEK 4GB Replacement Memory RAM Upgrade for HP-Compaq ProBook 4520s (DDR3-8500) Laptop Memory at Amazon.com OFFTEK 4GB Replacement Memory RAM Upgrade for HP-Compaq ProBook 4520s (DDR3-8500) Laptop Memory at Amazon.com](https://m.media-amazon.com/images/I/61mlx7jlbVL.jpg)
OFFTEK 4GB Replacement Memory RAM Upgrade for HP-Compaq ProBook 4520s (DDR3-8500) Laptop Memory at Amazon.com
![12.7mm 2nd Hdd Ssd Hard Drive Optical Caddy Adapter For Hp Probook 4320s 4321s 4325s 4326s 4520s 4525s 4510s 4530s - Laptop Repair Components - AliExpress 12.7mm 2nd Hdd Ssd Hard Drive Optical Caddy Adapter For Hp Probook 4320s 4321s 4325s 4326s 4520s 4525s 4510s 4530s - Laptop Repair Components - AliExpress](https://ae01.alicdn.com/kf/S5d39d26b9e504682a41574def833af00Z/12-7mm-2nd-HDD-SSD-Hard-Drive-Optical-Caddy-Adapter-for-HP-ProBook-4320s-4321s-4325s.jpg)
12.7mm 2nd Hdd Ssd Hard Drive Optical Caddy Adapter For Hp Probook 4320s 4321s 4325s 4326s 4520s 4525s 4510s 4530s - Laptop Repair Components - AliExpress
![How to disassemble the HP ProBook 4525s, replace the memory, hard drive, fan cleanup | SURPAN.CZ - YouTube How to disassemble the HP ProBook 4525s, replace the memory, hard drive, fan cleanup | SURPAN.CZ - YouTube](https://i.ytimg.com/vi/mtW3ql3FyFE/maxresdefault.jpg?sqp=-oaymwEmCIAKENAF8quKqQMa8AEB-AH-CYAC0AWKAgwIABABGE4gYihlMA8=&rs=AOn4CLAmJ9uJMvzy1MxTHCDxIHX_Mfbx_w)
How to disassemble the HP ProBook 4525s, replace the memory, hard drive, fan cleanup | SURPAN.CZ - YouTube
![Geeshop US Layout Replacement Keyboard Without Backlit for HP probook 4520 4520S 4525S - Walmart.com Geeshop US Layout Replacement Keyboard Without Backlit for HP probook 4520 4520S 4525S - Walmart.com](https://i5.walmartimages.com/asr/25247c1b-5fe3-4d71-bc45-91075acbe059.800b195117d83efca95d6fd04af248c6.jpeg)