If after installing the normal drivers and running the Dell Update program for your XPS 9530 system, you still have Unknown devices listed in Device manager and one referred to as PCI DATA Acquisition and Signal Processing Controller.
Do you only have one or two applications open so that the tablet runs quickly or do you need more applications open and have to accept slow performance? There are some things you can do to optimize the memory usage on a Dell Android Tablet.
Dell has received reports that systems with Verizon Wireless Wide Area Network 5808e cards show they are connected when using Cisco Virtual Private Network (VPN) 5.0.07.0290, the card show that it is connected but cannot send data over 4G WWAN.
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