The "T561 Root File 4.4.4" refers to the specific software package required to gain administrative (root) access to the Samsung Galaxy Tab E 9.6 (SM-T561)
If you want, I can generate:
After rebooting, you can verify root status using the Root Checker app from the Play Store. Do you need specific for the T561 Root File 4.4.4
Boot into : Press and hold Home + Power + Volume Down simultaneously. Press Volume Up when the warning screen appears. The "T561 Root File 4