Using USB peripherals with hardware debug I have a developer tablet, and I also need some peripherals connected via USB to my tablet and debug cable at the same time. I tried to connect USB hub to my tablet using OTG cable, by got the problem - tablet can use peripherals, but PC doesn't show the device in adb devices.

Is it possible to connect debug cable and USB peripherals to my tablet at the same time?
No, this is not possible. In order for your device to be in debug mode/connect to the computer with the debug cable, it needs to be connected as a slave device. The OTG cable tells the tablet to go into host mode. So now your computer is telling your tablet to be a slave but through the enumeration with the OTG cable the tablet believes it needs to be the master, there's a quarrel and it appears the tablet wins and is the master and thus your computer does not acknowledge the tablet's existence.
If you need the debugging tools have you looked into ADB wireless debugging? (Sorry I can't find the link right now but I've used it in the past and know it is somewhere on the developer.android.com site)
I couldn't find the link so I figured out how to do it again:

Open the command prompt and navigate to your sdk/platform-tools/ folder.
Type adb tcpip 5555
Type adb connect &lt;your device IP address&gt;:5555
At this point you unplug your device and type adb logcat
At times, such as unplugging/plugging into a USB device, the logcat will become disconnected, just redo steps 3 &amp; 4.