Intel DZ77BH-55K, Specification, Page: 50 / 100

Intel Desktop Board DZ77BH-55K Technical Product Specification
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Table 15. Component-side Connectors and Headers Shown in Figure 13
Item/callout
from Figure 13
Description
A PCI Express x1 bus add-in card connector
B Conventional PCI bus add-in card connector
C PCI Express x16 bus add-in card connector (x8 electrical; x16 compatible)
D S/PDIF out header
E Conventional PCI bus add-in card connector
F PCI Express x1 bus add-in card connector
G PCI Express x16 bus add-in card connector
H PCI Express x1 bus add-in card connector
I Rear chassis fan header
J 12 V processor core voltage connector (2 x 4 pin)
K Processor fan header
L Front chassis fan header
M Main power connector (2 x 12)
N SATA 3.0 Gb/s connector through the PCH (black)
O SATA 6.0 Gb/s connector through the PCH (blue)
P SATA 3.0 Gb/s connector through the PCH (black)
Q SATA 6.0 Gb/s connector through a Marvel 88SE9772 controller (gray)
R Chassis intrusion header
S Alternate front panel power LED header
T Front panel header
U Front panel USB 2.0 connector
V Front panel USB 2.0 connector
W Front panel USB 2.0 connector
X Consumer IR receiver (input) header
Y Front panel USB 3.0 connector (blue)
Z Consumer IR transmitter (output) header
AA S/PDIF out header
BB Auxiliary fan header
CC IEEE 1394a front panel header