Amazon.com: 2nd HDD SSD Hard Drive Optical Frame Caddy Adapter for Lenovo ThinkPad E550 E550C E555 E560 E565 only with Bezel Front Panel Faceplate Metal Bracket Holder : Electronics
Lenovo Thinkpad E550 15.6" Intel Core i3 5th Gen Dual-Core 8GB RAM 256SSD Windows 10
New Replacement 9.5mm 2nd SATA Hard Drive HDD SSD Enclosure Caddy For Lenovo ThinkPad E555 E550 E560 E440 E540 L540 L440 UJ273 - AliExpress
Lenovo Thinkpad E550 15.6" Intel Core i3 5th Gen Dual-Core 8GB RAM 256SSD Windows 10
Lenovo ThinkPad E550 15.6-in USED Laptop - Intel Core i5 5200U 5th Gen 2.20 GHz 8GB 256GB SSD DVD-RW Windows 10 Pro 64-Bit - Webcam - Walmart.com
Inside the Lenovo ThinkPad E550 - disassembly, internal photos and upgrade options | LaptopMedia.com