Hi, The DTL-4 frezes my desktop (a Siemens Senic xL runing Win XP) when trying to use it in a PCI to PCMCIA bridge from P-Series. When I take the DTL-4 out of the card reader everything works perfect again. The device manager tells me I am using a Texas Instruments PCI 1211 Cardbus Controller. The same DTL-4 works without problems on a Laptop. What can be the problem??