Intel DZ77BH-55K, Specification, Page: 48 / 100

Intel Desktop Board DZ77BH-55K Technical Product Specification
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2.2.1 Back Panel Connectors
Figure 12 shows the location of the back panel connectors for the board.
Item Description
A PS/2 port
B USB 2.0 high current charging ports
C Back to BIOS
D HDMI connector
E USB 3.0 ports
F DisplayPort connector
G IEEE 1394a connector
H eSATA connector
I USB 2.0 ports
J LAN port
K USB 3.0 ports
L Rear surround
M S/PDIF out (optical)
N Center channel and LFE (Subwoofer)
O Line in
P Line out/front speakers
Q Mic in/side surround
Figure 12. Back Panel Connectors
NOTE
The back panel audio line out connector is designed to power headphones or amplified
speakers only. Poor audio quality occurs if passive (non-amplified) speakers are
connected to this output.