I see. Then Grace Digital Tuner might be a product you're looking for.
Only gottcha - they Do claim support for usb thumb drives, but not usb hard drive.
From technical standpoint, only real difference I think is amount of power available at it's usb ports.
It might be insufficient to power more power hungry usb drive - but don't take it as a fact - your drive might work (or not).
Luckily, larger sized thumb drives are dropping in prices even faster than stock markets:
This one for example:
http://www.amazon.com/Lexar-JumpDrive-256GB-Flash-Drive/dp/B00S5V5PTC/ref=sr_1_9?s=pc&ie=UTF8&qid=1455395442&sr=1-9&keywords=256gb+thumb+drive