The GEM External Hard Drive Case is specifically designed for hard drives up to 150mm x 90mm x 20mm. The high quality hard shell exterior along with the soft inner lining will help protect your hard drive against those scrapes and drops that inevitably happen. It is the perfect case for today"s external hard drive. The hard drive is held in place by a restraining strap. The case also has an additional internal pocket for accessories such as USB cables, memory sticks, etc. In summary the GEM External Hard Drive Case is sure to please through its thoughtful design and excellent quality. All brand names and product names are trademarks or trade names of their respective holders. The brands and trademarks owned by the OEMs (original equipment manufacturers) are referred to only for the purpose of pointing out which of the OEM products are compatible with ours. GEM is not in any way associated with any OEM.