ASROCK Rack C2550D4I User Manual download pdf (Page 23)

2.5 Jumpers Setup

The illustration shows how jumpers are

setup. When the jumper cap is placed on

pins, the jumper is “Short”. If no jumper cap

is placed on pins, the jumper is “Open”. The

illustration shows a 3-pin jumper whose

pin1 and pin2 are “Short” when jumper cap

is placed on these 2 pins.

USB Selection Jumpers

(3-pin USB_SEL1)

(see p.13 or 15, No. 10)

(3-pin USB_SEL2)

(see p.13 or 15, No. 19)

1-2:

Default

2-3:

USB Selection

Support 2 via rear USB2 ports and 1 via front USB headers con-

trolled by USB_SEL1:1-2 and USB_SEL2:1-2

Support 1 via rear USB2 ports and 2 via front USB headers con-

trolled by USB_SEL1:2-3 and USB_SEL2:2-3

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 61 62

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ASROCK Rack C2550D4I User Manual Page 23