Lenovo IdeaCentre K330B Hardware Replacement Manual page 16

Memory connectors (2)
Thermal sensor header connector
Power connector
SATA connectors (4)
Front panel connector
Front USB connectors (3)
Serial(com2) connector
Front audio connector
PCI express X 1 adapter connectors (3)
PCI express X 16 adapter connector
System fan connector
12V power connector
IdeaCentre K335
13
Hardware Replacement Guide