Hey JamesH, good question.
THE place for ANYTHING and EVERYTHING in cables is "Conectrol".
These guys are serious about their cables
I dare to say that if you can't find it there, it does not exist! They will also make any cabel custom to suite your needs.
Conectrol is also a lot cheaper than the Corte Ingl�s, fnac, etc...
The 2 shops are on Calle Jorge Juan #57 and 58 (across the street from each other).
The one (store) you want is at #57, click
HERE FOR THE QDQ PHOTO 
Phone # is 91 578 1034
Closest Metro stop is Goya (red #2 line), get off and backtrack walking a bit down Calle Alcal� and Calle Jorge Juan crosses Calle Alcal�. Make a right on Jorge Juan and Conectrol is right there.
website at
www.conectrol.comOne thing, the guys who work there are often "bordes" (bad-tempered) with the clients
They do not have much patience with clients unless they know EXACTLY what they are looking for and how to express it. If you can put up with their attitudes, it is a great place to get whatever you need for computers, telephones, etc...
Saludos,
jer...
- rent or buy a cell phone from me for your stay in spain, more info at 
- already have a cell phone, get a spanish SIM card for it at 
