I.R.I.S. 808 Digital Video Recorder - Manual (Page 14)

Connect this unit to a 10/100Base-T Ethernet network through this port.
17.USB connector (USB)
Connect to USB 2.0 compatible storage device, such as USB 2.0 disk
drive, DVD+RW, card reader, etc.
Please note that the maximum USB
current for the DVR is 500 mA.
18.SD slot
Used to insert SD card for backup.
19.Handle
Used to pull out the DVR host after the key is unlocked.
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