Cable Connections
System board connectors are color-coded to make it easier to find the proper connection.
Table 2-3 Cable connections — 500B
Connector Name Connector Color Description
ATX_POWER white power supply, 24-pin
ATX_12V white power supply, 4-pin
SYS_FAN1 brown chassis fan
CPU_FAN white heat sink fan
F PANEL black front power button/LED
F_USB1 white front I/O USB cable
F_AUDIO yellow front I/O audio
SATA1 dark blue hard drive
SATA2 white optical drive
PCI2 white PCI expansion slot
PCIE1X black PCIe x1 expansion slot
PCIE1X1 black PCIe x1 expansion slot
PCIE16X black PCIe x16 expansion slot
Table 2-4 Cable connections — 505B
Connector Name Connector Color Description
ATXPOWER white power supply, 24-pin
ATXCPU white power supply, 4-pin
CHASSIS_FAN1 brown chassis fan
CPU FAN white heat sink fan
F_PANEL black front power button/LED
F_USB2 white front I/O USB cable
F_AUDIO yellow front I/O audio
SATA0 dark blue hard drive
SATA1 white optical drive
PCI1 white PCI expansion slot
PCIE_X1_1 black PCIe x1 expansion slot
PCIE_X1_2 black PCIe x1 expansion slot
PCIE X16 black PCIe x16 expansion slot
20 Chapter 2 Removal and Replacement Procedures Microtower (MT) Chassis
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