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bluefury81
1 Copper

Change FIFO Bytes on Serial Adapter Card Startech PEX2S553 on Optiplex 3040

I have purchased 14 Optiplex 3040 with a card adapter to obtain 2 additional serial ports (Startech PEX2S553). This card is working with 128 bytes FIFO and my banking periphals can´t establish communication with the optiplex pc. Is it possible limit to 16 bytes fifo like other cards ??

Thanks in advance

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1 Reply
7 Plutonium

RE: Change FIFO Bytes on Serial Adapter Card Startech PEX2S553 on Optiplex 3040

You are talking about MSDOS REAL MODE 16 bit feature that has not existed since windows 98SE.

So no there is no PCI-E card bios fix for this.


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