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P/E-P55T2P4D User’s Manual 7
III. INSTALLATION
Jumper Settings
1. UART 2 Selection (JP24 & 25) (SMC37C665IR Only)
If your motherboard is using the SMC37C665IR chipset, besides changing the
function of UART2 (serial, parallel, floppy, and infrared) in BIOS setup (see
page 38), you must also change the following jumpers. If your motherboard is
not using this chipset, UART2 is controlled through BIOS only and these jump-
ers will not be available on the motherboard.
UART2 COM2 Infrared
JP24 [1-2] [2-3]
JP25 [1-2] [2-3]
UART 2 Selection (COM2 / Infrared)
COM2 (Default) Infrared
JP25
JP24
123
JP25
JP24
123
2. ECP DMA Channel Selection (JP26&27) (SMC37C665IR/37C669)
If your motherboard is using the SMC37C665IR or SMC37C669 chipset, you
can select DMA channels for the ECP function with the following jumpers. If
your motherboard is not using the above chipsets, the DMA channel is con-
trolled by BIOS and these jumpers will not be available.
DMA JP27 JP26
Channel 3 [2-3] [2-3] (Default)
Channel 1 [1-2] [1-2]
ECP DMA Channel Selection (Channel 3 / Channel 1)
CH 3 (Default)
CH 1
1
2
3
JP27
1
2
3
JP27
JP26
JP26
III. INSTALLATION
(Jumpers)