Dell OptiPlex 745 & Dimension C521 I/O Panel Assembly pin-out распиновка и описание @ pinouts.ru

Similar to Dell Dimension 3100 (no Mic) and 5150 (USB skts are counted from the left)

Pin Number	Pin Name	Description
1	Headphones	Left
2	Headphones	GND
3	Headphones	Right
4	?
5	Mic in	Left
6	?
7	Mic in	Right
8	Mic	GND
9	?
10	?
11	?
12	Ground	GND
13	?
14	?
15	Diag LED 3
16	?
17	Hard Drive LED	-ve
18	Diag LED 2
19	?
20	Pwr LED Green	-ve (note 1)
21	(missing)	'Key'
22	Pwr LED Oragge	-ve (note1)
23	PWR ON	switch to Gnd
24	LAN LED	+ve
25	?
26	LAN LED	Gnd
27	PWR ON	Gnd
28	GND
29	GND
30	GND
31	GND
32	?
33	USB #1p4	+5v (note 2)
34	USB #1p3, Data
35	USB #1p2, Data
36	Gnd
37	USB #2p3, Data
38	USB #2p2, Data
39	USB #2p4	+5v (note 2)
40	?

Note 1. The power LED is a 'bi-colour' type'. The voltage on the control pair is reversed to switch from one colour to the other (so +5v / 0v is Orange, 0v / +5v is Green

Note 2. The USB 5v fuses are on the motheboard (replacing the front panel board won't fix a blown fuse)

На распиновку Dell OptiPlex 745 & Dimension C521 I/O Panel Assembly pin-out есть 3 отзыв(а): 3 положительных и 0 отрицательных.

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Источник(и) этой и дополнительной информации: http://www.sevenforums.com/hardware-devices/63920-dell-dimension-c521-front-panel.html

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Распиновка Dell OptiPlex 745 & Dimension C521 I/O Panel Assembly pin-out