chip pinout

     9-scroll down~
     8-scroll up~
     7-left click~
     6-right click~
     5-
     4-
     3-clk
     2-data
     1-
    o <- dot on chip
44444
45678
|||||
||
|+-GND
+5V

T1004 920-000191-03RevA

connector pinout

1	5V	T20, T22
2	DATA
3	CLK
4	RIGHT CLICK	T4
5	LEFT CLICK	T6
6	GND	T11, T10
7	SCROLL UP	T5
8	SCROLL DOWN

T1006 920-000489-01RevA

connector pinout

1	5V	T20, T22 (after R470)
2	DATA	T11
3	CLK	T10
4	GND	T23, T30
5
6
7
8