(power over eSATA) standard is a little gem that is not very
well-known. It is the simplest way to externally connect any 2.5"
drive to a computer via an inexpensive, simple, dumb cable:
All the other products on the market that connect drives
to computers (drive enclosures, docking stations, my
custom SATA power module, etc) do it in an inferior way
by either increasing bulk by depending on an external power supply,
or by decreasing throughput by using a USB cable which offers only 1/6th
the bandwidth of SATA 3Gbps (480Mbps).
eSATAp combines USB power & SATA speed.
(The fact it is 5V only is why this standard only works with 2.5" drives;
3.5" drives need 5V+12V to operate.)
The most clever thing about it is that it is mechanically backward compatible
with both USB and eSATA connectors!
The first eSATAp product demonstrations were done in 2009.
Two years later, I can find a grand total of 3 eSATAp cables/enclosures
on my favorite online retailers. Why?