Opticaddy 2nd © SATA-3 HDD/SSD Universal 12.7 mm SATA to SATA Caddy Adapter KIT with external USB Case for optical drive OptiSpeed Technology (Original 2nd Hard Drive Caddy/Cage, Adapter Set)

Easy to install both the 2nd HDD into the laptop and the DVD into the caddy.Both work perfectly. Very happy.Can't comment on the instructions as these are so easy to install they were not needed.