Chieftec eeb-125s-u3 is a chassis for 2.5″ sata drives which is usb powered and being both USB2 and USB3 compatible.
Included in the package is the slim size chassis, a short usb3 “SuperSpeed” cable.
The cable is 60cm long and have a micro-usb3 port in one end while the other end is splitted into two, with usb3+usb2 contacts.
Having 2 contacts in the end is for those occasions when a single usb port alone cant power the unit, thus drawing power from 2 ports is needed. With usb3 port this shouldnt be a problem.
Chassis is mainly metal, feels solid and have a brushed aluminium look but is most likely not aluminium.
Without a drive the chassis aint much usefull so I’ve chosen to add a SSD drive to it rather than HDD.
Reason for choosing SSD over HDD is due to security and speed. With a mechanical system as in a hdd, bumping into something can cause the head to smash into the plate(s) and ruin the drive. The head or motor can also fail.
Since SSD drives is purely electronical not having any mechanical parts those potential “bumping” problems isnt an issue. SSD can still break, but then from other reasons.
With the superior speed of SSD, over an USB3 connection there will be minimum of waiting for large files to transfer to-from it.
Newer Macbooks do have another option named Thunderbolt, which is about twice as fast as USB3 again.
Since most do not yet have thunderbolt (or lightning) ports on their computers, and even many dont have usb3 I choose backwards compability over faster speed.
USB3 is fast enough and still backward compatible in those situations when the client just have usb2(or 1).
Model of choice was OCZ Vertex 4 256GB which is plenty of space for a normal collection of documents, photos etc.
Included with the 2.5″ size SSD was also an adapter to use it in a 3.5″ bay if needed, which might be handy later. Few screws, a sticker and thats it.