![2nd SATA 12.7mm hard drive SSD HDD Caddy Adapter For HP ProBook 4520s 4525s 4720s 4730s GT31L - AliExpress 2nd SATA 12.7mm hard drive SSD HDD Caddy Adapter For HP ProBook 4520s 4525s 4720s 4730s GT31L - AliExpress](https://ae01.alicdn.com/kf/HTB1rDuJXvDH8KJjy1Xcq6ApdXXag/2nd-SATA-12-7mm-hard-drive-SSD-HDD-Caddy-Adapter-For-HP-ProBook-4520s-4525s-4720s.jpg)
2nd SATA 12.7mm hard drive SSD HDD Caddy Adapter For HP ProBook 4520s 4525s 4720s 4730s GT31L - AliExpress
![12.7mm 2nd HDD SSD Hard Drive Optical Caddy Adapter for HP ProBook 4320s 4321s 4325s 4326s 4520s 4525s 4510s 4530s - AliExpress 12.7mm 2nd HDD SSD Hard Drive Optical Caddy Adapter for HP ProBook 4320s 4321s 4325s 4326s 4520s 4525s 4510s 4530s - AliExpress](https://ae01.alicdn.com/kf/S5d39d26b9e504682a41574def833af00Z.jpg_640x640Q90.jpg_.webp)
12.7mm 2nd HDD SSD Hard Drive Optical Caddy Adapter for HP ProBook 4320s 4321s 4325s 4326s 4520s 4525s 4510s 4530s - AliExpress
![NIGUDEYANG 2nd Optical bay SATA 12.7mm Hard Drive SSD HDD Caddy Adapter Frame For HP ProBook 4520s 4525s 4720s 4730s GT31L - AliExpress NIGUDEYANG 2nd Optical bay SATA 12.7mm Hard Drive SSD HDD Caddy Adapter Frame For HP ProBook 4520s 4525s 4720s 4730s GT31L - AliExpress](https://ae01.alicdn.com/kf/S7adc6cd70f924256a3b49bdc60f25259a.jpg_640x640Q90.jpg_.webp)
NIGUDEYANG 2nd Optical bay SATA 12.7mm Hard Drive SSD HDD Caddy Adapter Frame For HP ProBook 4520s 4525s 4720s 4730s GT31L - AliExpress
![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/41iuedmjPzL.jpg)
Amazon.com: DY-tech 2nd Hard Drive HDD SSD Caddy Tray for HP ProBook 4520s 4525s 4720s 4730s GT31L : Electronics
![A-Tech 8GB (2 x 4GB) RAM for HP PROBOOK 4520S | DDR3 1333MHz SODIMM PC3-10600 204-Pin Non-ECC Memory Upgrade Kit at Amazon.com A-Tech 8GB (2 x 4GB) RAM for HP PROBOOK 4520S | DDR3 1333MHz SODIMM PC3-10600 204-Pin Non-ECC Memory Upgrade Kit at Amazon.com](https://m.media-amazon.com/images/I/51ABCdfdfUL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFIVE%2CBottomLeft%2C360%2C-6_SR600%2C315_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
A-Tech 8GB (2 x 4GB) RAM for HP PROBOOK 4520S | DDR3 1333MHz SODIMM PC3-10600 204-Pin Non-ECC Memory Upgrade Kit at Amazon.com
![Amazon.com: 12.7mm SATA 2nd Second HDD SSD Hard Drive Optical Bay Caddy Frame Tray Bracket for HP Probook 4510s 4520s 4525s 4430s 4530s : Electronics Amazon.com: 12.7mm SATA 2nd Second HDD SSD Hard Drive Optical Bay Caddy Frame Tray Bracket for HP Probook 4510s 4520s 4525s 4430s 4530s : Electronics](https://m.media-amazon.com/images/I/81Up-XpPbrL._AC_UF894,1000_QL80_.jpg)