this product is the left elbow，cable length 1.5 m

product use: used for For macbook;macbook Pro， mac Book air or netbook WITH mini displayport， etc toCONNECT to A dvi port on display.

product characteristics:
u25c7 support Mini displayport v1.2;
u25c7 support Mini displayport signal to dvi signal conversion;
u25c7 support 20pin mini displayport interface;
u25c7 supports up to 10.8Gbps video bandwidth;
u25c7 highest support QXGA (1920*1200) resolution output;
u25c7 support 1Mbps bidirectional auxiliary channel;
u25c7 support unilateral， single channel， four wire connection;
u25c7 support hot swappable.
u25c7 built-in converter chip， no external power supply
u25c7 in Strict Accordance with the Mini displayport standard design，and is in keeping with the Mini displayport specification， signaltransmission is stable and reliable

pay attention to this section is byway of displayport to dvi cable， and cannot be reversed BY the DVIto displayport.