It was written by ethen from shoudian.com , if you want use the picture ,please contact him first .
This thread mainly tell us how to identify the LED.
Can you identify the LED well ? What's the different between XP-E and XP-G ?please read this thread :

1.XR-E





Cree XR-E             350ma      114-122lumens         1A         256-274lumens

2.XR-C



 

Cree XR-C    350ma    80-90lumens

3.XP-C






Cree XP-C   have 3 wires in it

4. XP-E











Cree XP-E   4 wires

5. XP-G







Cree XP-G   5 wires       350ma    139lumens        1A      345 lumens

What's the different between XP-E and XP-G ?

1. XP-E have 4 wires, XP-G have 5 wires
2. XP-E have 3 black spot ,XP-G didn't have
3. The die of XP-G is much bigger than XP-E



6.MCE






7.XML

This looks like a nice item. Is there still some of these available at the site to buy?