uh yeah, it's a PCIe-mini card (can't you see the picture?)
http://en.wikipedia.org/wiki/PCI_Express_Mini_Card

From the eeeusers board:

"Hello! I'm testing "BUFFALO SHD-EP9" now.
The number of samples that I'm using is two (SLC16GB and MLC32GB).
I hear that the model of 16GB examined the sale if there is a demand from the user.
These modules are 901 exclusive uses.
However, I confirmed 900 and as many as 701 operation.

BenchMark Results

32GB MLC
--------------------------------------------------
CrystalDiskMark 2.1 (C) 2007-2008 hiyohiyo
Crystal Dew World : h​t​t​p​:​/​/​c​r​y​s​t​a​l​m​a​r​k​.​i​n​f​o​/
--------------------------------------------------

Sequential Read : 33.183 MB/s
Sequential Write : 9.992 MB/s
Random Read 512KB : 33.227 MB/s
Random Write 512KB : 2.505 MB/s
Random Read 4KB : 6.444 MB/s
Random Write 4KB : 0.030 MB/s
Test Size : 50 MB

16GB SLC
--------------------------------------------------
CrystalDiskMark 2.1 (C) 2007-2008 hiyohiyo
Crystal Dew World : h​t​t​p​:​/​/​c​r​y​s​t​a​l​m​a​r​k​.​i​n​f​o​/
--------------------------------------------------

Sequential Read : 40.699 MB/s
Sequential Write : 25.194 MB/s
Random Read 512KB : 41.100 MB/s
Random Write 512KB : 5.994 MB/s
Random Read 4KB : 8.617 MB/s
Random Write 4KB : 0.068 MB/s
Test Size : 50 MB"

How would you transfer your installation to the new disk, though?