... 6-channel(Line out, Line, Mic jacks on board)SATA2 Serial II ATA interface, support for 3Gb / s, MINI-PCIE SATA ... 12V VGA CRT RJ-45 Audio jacks 4 USB ports Serial Port (COM1)Power supportDC12V separate power supplyOperating Temperature0°C~60 ... reference:With the customer display: The standard interfaces:With two serial ports optional: Also can be connect with the 4Xchannels DVR ...