It is really small (ca.15cm * 8cm * 1 cm) and a "plug and play" device.
This means just plug it in and it may be transferred.
The router (with UPnP Agent) she immediately recognized and incorporated as a media server.
The hard disk has an actual size of 471GB, there a few GB are used for the disk itself.
The transmission is insanely fast, about 100 photos (depending 2MB) downloaded in about 10 seconds!
The USB 3.0 connector is also a USB 2.0 port.
It is made of sturdy metal, so it is - if it is in continuous operation - a bit much warm.
CONCLUSION:
For this low price, this external hard drive from Verbatim (500GB) is extremely fast and unbeatable good!
There is really no flaws in it, except that it is slightly warm.
+++ +++ Strong buy recommendation