User`s manual
INSTALLATION 
6  ET500 User’s Manual 
Connectors on ET500 
1. X1 (PCI-Bus, USB, Audio) 
Pin Signal Pin Signal Pin Signal Pin Signal 
1 GND  2 GND  51 VCC  52 VCC 
3 PCICLK3  4 PCICLK4 53 PAR  54 SERRJ 
5 GND  6 GND  55 GPERRJ 56 N C 
7 PCICLK1  8 PCICLK2 57 PMEJ  58 USB20 
9  REQJ3  10 GNTJ3  59 LOCKJ  60 DEVSELJ
11 GNTJ2  12 3V  61 TRDYJ  62 USB30 
13 REQJ2  14 GNTJ1  63 IRDYJ  64 STOPJ 
15 REQJ 1  16 3V  65 FRAMEJ 66 USB21 
17 GNTJ0  18 N.C.  67 GND  68 GND 
19 VCC  20 VCC  69 AD16  70 CBEJ2 
21 SERIRQ  22 REQJ0  71 AD17  72 USB31 
23 AD0  24 3V  73 AD19  74 AD18 
25 AD1  26 AD2  75 AD20  76 USB00 
27 AD4  28 AD3  77 AD22  78 AD21 
29 AD6  30 AD5  79 AD23  80 USB10 
31 CBEJ0  32 AD7  81 AD24  82 CBEJ3 
33 AD8  34 AD9  83 VCC  84 VCC 
35 GND  36 GND  85 AD25  86 AD26 
37 AD10  38 AUXAL  87 AD28  88 USB01 
39 AD11  40 MIC  89 AD27  90 AD29 
41 AD12  42 AUXAR  91 AD30  92 USB11 
43 AD13  44 ASVCC 93 PCIRSTJ 94 AD31 
45 AD14  46 SNDL  95 IRQY  96 IRQZ 
47 AD15  48 ASGND  97 IRQW  98 IRQX 
49  CBEJ1  50 SNDR  99 GND  100 GND 










