The phone offers an easy-to-use interface and provides a traditional telephony-like user experience, Wideband for enhanced audio clarity, Line keys, Soft keys, Four-way navigation keys
Power Supply
IEEE Power over Ethernet class 2, Cisco IP Phone Power Cube 4
Four (4) UDIMM slots , Up to 16 GB DDR3 1333 MHz SDRAM
Hard Drive
HDD
Removable Media
Optional
Expansion Bays
External: One (1) 5.25-inch, One (1) 3.5-inch Internal: One (1) 3.5-inch
Expansion Slots
One (1) LP PCI, Two (2) LP PCIe x16, One (1) LP PCIe x1
Graphics
Intel HD Graphics 2000/3000 (integrated)
Audio
Realtek ALC261 codec
Communications
Gigabit Ethernet
I/O Ports
10 USB 2.0, 1 serial (optional), 1 parallel (optional), 1 eSATA (optional), 1 DisplayPort, 1 VGA video, 1 PS/2 keyboard, 1 PS/2 mouse, 1 RJ-45, 1 microphone/headphone jack, 1 line in, 1 line out, DVI output available via optional DisplayPort to DVI adapter