If you're looking for more storage with a small form factor, check out this deal on the 2 TB Sabrent Rocket Q internal SDD on Amazon. It uses an M.2 interface and is currently available for a new low price using a $50 coupon at checkout.
Because this is an SSD, you can expect faster read/write speeds than a traditional hard drive. This model can get as fast as 3200/2900 Mbps and also supports useful commands like TRIM and SMART.
This can be a good deal if you're looking to expand your storage without taking up much space—the Sabrent Rocket Q measures in at just 3.15" x 0.86" x 0.11". This offer extends to the 2 TB model.
If you want to take part in this deal, check out the Sabrent Rocket Q product page on Amazon. Be sure to check the coupon box to apply the $50 discount at checkout.